VOLUME VI SLICE IV Cincinnatus to Cleruchy (continued 9)

Claudius was a prolific writer, chiefly on history, but his works are lost. He wrote (in Greek) a history of Carthage and a history of Etruria; (in Latin) a history of Rome from the death of Caesar, an autobiography, and an essay in defence of Cicero against the attacks of Asinius Gallus. He also introduced three new letters into the Latin alphabet: Ⅎ for the consonantal V, ⃝ for BS and PS, ˫ for the intermediate sound between I and U.

Authorities.—Ancient: the Annals of Tacitus, Suetonius and Dio Cassius. Modern: H. Lehmann, Claudius und seine Zeit, with introductory chapter on the ancient authorities (1858); Lucien Double, L’Empereur Claude (1876); A. Ziegler, Die politische Seite der Regierung des Kaisers Claudius (1885); H.F. Pelham in Quarterly Review (April 1905), where certain administrative and political changes introduced by Claudius, for which he was attacked by his contemporaries, are discussed and defended; Merivale, Hist. of the Romans under the Empire, chs. 49, 50; H. Schiller, Geschichte der römischen Kaiserzeit, i., pt. 1; H. Furneaux’s ed. of the Annals of Tacitus (introduction).

CLAUDIUS, the name of a famous Roman gens. The by-form Clodius, in its origin a mere orthographical variant, was regularly used for certain Claudii in late republican times, but otherwise the two forms were used indifferently. The gens contained a patrician and a plebeian family; the chief representatives of the former were the Pulchri, of the latter the Marcelli (see Marcellus). The following members of the gens deserve particular mention.

1. Appius Saminus Inregillensis, or Regillensis, Claudius, so called from Regillum (or Regilli) in Sabine territory, founder of the Claudian gens. His original name was Attus or Attius Clausus. About 504 B.C. he settled in Rome, where he and his followers formed a tribe. In 495 he was consul, and his cruel enforcement of the laws of debtor and creditor, in opposition to his milder colleague, P. Servilius Priscus, was one of the chief causes of the “secession” of the plebs to the Sacred Mount. On several occasions he displayed his hatred of the people, although it is stated that he subsequently played the part of mediator.

Suetonius, Tiberius, i.; Livy ii. 16-29; Dion. Halic. v. 40, vi. 23, 24.

2. Claudius, Appius, surnamed Crassus, a Roman patrician, consul in 471 and 451 B.C., and in the same and following year one of the decemvirs. At first he was conspicuous for his aristocratic pride and bitter hatred of the plebeians. Twice they refused to fight under him, and fled before their enemies. He retaliated by decimating the army. He was banished, but soon returned, and again became consul. In the same year (451) he was made one of the decemviri who had been appointed to draw up a code of written laws. When it was decided to elect decemvirs for another year, he who had formerly been looked upon as the champion of the aristocracy, suddenly came forward as the friend of the people, and was himself re-elected together with several plebeians. But no sooner was the new body in office, than it treated both patricians and plebeians with equal violence, and refused to resign at the end of the year. Matters were brought to a crisis by the affair of Virginia. Enamoured of the beautiful daughter of the plebeian centurion Virginius, Claudius attempted to seize her by an abuse of justice. One of his clients, Marcus Claudius, swore that she was the child of a slave belonging to him, and had been stolen by the childless wife of the centurion. Virginius was summoned from the army, and on the day of trial was present to expose the conspiracy. Nevertheless, judgment was given according to the evidence of Marcus, and Claudius commanded Virginia to be given up to him. In despair, her father seized a knife from a neighbouring stall and plunged it in her side. A general insurrection was the result; and the people seceded to the Sacred Mount. The decemvirs were finally compelled to resign and Appius Claudius died in prison, either by his own hand or by that of the executioner. For a discussion of the character of Appius Claudius, see Mommsen’s appendix to vol. i. of his History of Rome. He holds that Claudius was never the leader of the patrician party, but a patrician demagogue who ended by becoming a tyrant to patricians as well as plebeians. The decemvirate, one of the triumphs of the plebs, could hardly have been abolished by that body, but would naturally have been overthrown by the patricians. The revolution which ruined Claudius was a return to the rule of the patricians represented by the Horatii and Valerii.

Livy iii. 32-58; Dion. Halic. x. 59, xi. 3.

3. Claudius, Appius, surnamed Caecus, Roman patrician and author. In 312 B.C. he was elected censor without having passed through the office of consul. His censorship—which he retained for five years, in spite of the lex Aemilia which limited the tenure of that office to eighteen months—was remarkable for the actual or attempted achievement of several great constitutional changes. He filled vacancies in the senate with men of low birth, in some cases even the sons of freedmen (Diod. Sic. xx. 36; Livy ix. 30; Suetonius, Claudius, 24). His most important political innovation was the abolition of the old free birth, freehold basis of suffrage. He enrolled the freedmen and landless citizens both in the centuries and in the tribes, and, instead of assigning them to the four urban tribes, he distributed them through all the tribes and thus gave them practical control of the elections. In 304, however, Q. Fabius Rullianus limited the landless and poorer freedmen to the four urban tribes, thus annulling the effect of Claudius’s arrangement. Appius Claudius transferred the charge of the public worship of Hercules in the Forum Boarium from the Potitian gens to a number of public slaves. He further invaded the exclusive rights of the patricians by directing his secretary Gnaeus Flavius (whom, though a freedman, he made a senator) to publish the legis actiones (methods of legal practice) and the list of dies fasti (or days on which legal business could be transacted). Lastly, he gained enduring fame by the construction of a road and an aqueduct, which—a thing unheard of before—he called by his own name (Livy ix. 29; Frontinus, De Aquis, 115; Diod. Sic. xx. 36). In 307 he was elected consul for the first time. In 298 he was interrex; in 296, as consul, he led the army in Samnium, and although, with his colleague, he gained a victory over the Etruscans and Samnites, he does not seem to have specially distinguished himself as a soldier (Livy x. 19). Next year he was praetor, and he was once dictator. His character, like his namesake the decemvir’s is not easy to define. In spite of his political reforms, he opposed the admission of the plebeians to the consulship and priestly offices; and, although these reforms might appear to be democratic in character and calculated to give preponderance to the lowest class of the people, his probable aim was to strengthen the power of the magistrates (and lessen that of the senate) by founding it on the popular will, which would find its expression in the urban inhabitants and could be most easily influenced by the magistrate. He was already blind and too feeble to walk, when Cineas, the minister of Pyrrhus, visited him, but so vigorously did he oppose every concession that all the eloquence of Cineas was in vain, and the Romans forgot past misfortunes in the inspiration of Claudius’s patriotism (Livy x. 13; Justin xviii. 2; Plutarch, Pyrrhus, 19). The story of his blindness, however, may be merely a method of accounting for his cognomen. Tradition regarded it as the punishment of his transference of the cult of Hercules from the Potitii.

Appius Claudius Caecus is also remarkable as the first writer mentioned in Roman literature. His speech against peace with Pyrrhus was the first that was transmitted to writing, and thereby laid the foundation of prose composition. He was the author of a collection of aphorisms in verse mentioned by Cicero (of which a few fragments remain), and of a legal work entitled De Usurpationibus. It is very likely also that he was concerned in the drawing up of the Legis Actiones published by Flavius. The famous dictum “Every man is the architect of his own fortune” is attributed to him. He also interested himself in grammatical questions, distinguished the two sounds R and S in writing, and did away with the letter Z.

See Mommsen’s appendix to his Roman History (vol. i.); treatises by W. Siebert (1863) and F.D. Gerlach (1872), dealing especially with the censorship of Claudius.

4. Claudius, Publius, surnamed Pulcher, son of (3). He was the first of the gens who bore this surname. In 249 he was consul and appointed to the command of the fleet in the first Punic War. Instead of continuing the siege of Lilybaeum, he decided to attack the Carthaginians in the harbour of Drepanum, and was completely defeated. The disaster was commonly attributed to Claudius’s treatment of the sacred chickens, which refused to eat before the battle. “Let them drink then,” said the consul, and ordered them to be thrown into the sea. Having been recalled and ordered to appoint a dictator, he gave another instance of his high-handedness by nominating a subordinate official, M. Claudius Glicia, but the nomination was at once overruled. Claudius himself was accused of high treason and heavily fined. He must have died before 246, in which year his sister Claudia was fined for publicly expressing a wish that her brother Publius could rise from the grave to lose a second fleet and thereby diminish the number of the people. It is supposed that he committed suicide.

Livy, Epit., 19; Polybius i. 49; Cicero, De Divinatione, i. 16, ii. 8; Valerius Maximus i. 4, viii. I.

5. Claudius, Appius, surnamed Pulcher, Roman statesman and author. He served under his brother-in-law Lucullus in Asia (72 B.C.) and was commissioned to deliver the ultimatum to Tigranes, which gave him the choice of war with Rome or the surrender of Mithradates. In 57 he was praetor, in 56 propraetor in Sardinia, and in 54 consul with L. Domitius Ahenobarbus. Through the intervention of Pompey, he became reconciled to Cicero, who had been greatly offended because Claudius had indirectly opposed his return from exile. In this and certain other transactions Claudius seems to have acted from avaricious motives,—a result of his early poverty. In 53 he entered upon the governorship of Cilicia, in which capacity he seems to have been rapacious and tyrannical. During this period he carried on a correspondence with Cicero, whose letters to him form the third book of the Epistolae ad Familiares. Claudius resented the appointment of Cicero as his successor, avoided meeting him, and even issued orders after his arrival in the province. On his return to Rome Claudius was impeached by P. Cornelius Dolabella on the ground of having violated the sovereign rights of the people. This led him to make advances to Cicero, since it was necessary to obtain witnesses in his favour from his old province. He was acquitted, and a charge of bribery against him also proved unsuccessful. In 50 he was censor, and expelled many of the members of the senate, amongst them the historian Sallust on the ground of immorality. His connexion with Pompey brought upon him the enmity of Caesar, at whose march on Rome he fled from Italy. Having been appointed by Pompey to the command in Greece, in obedience to an ambiguous oracle he crossed over to Euboea, where he died about 48, before the battle of Pharsalus. Claudius was of a distinctly religious turn of mind, as is shown by the interest he took in sacred buildings (the temple at Eleusis, the sanctuary of Amphiaraus at Oropus). He wrote a work on augury, the first book of which he dedicated to Cicero. He was also extremely superstitious, and believed in invocations of the dead. Cicero had a high opinion of his intellectual powers, and considered him a great orator (see Orelli, Onomasticon Tullianum).

A full account of all the Claudii will be found in Pauly-Wissowa’s Realencyclopädie der classischen Altertumswissenschaft, iii. 2 (1899).

CLAUDIUS, MARCUS AURELIUS, surnamed Gothicus, Roman emperor A.D. 268-270, belonged to an obscure Illyrian family. On account of his military ability he was placed in command of an army by Decius; and Valerian appointed him general on the Illyrian frontier, and ruler of the provinces of the lower Danube. During the reign of Gallienus, he was called to Italy in order to crush Aureolus; and on the death of the emperor (268) he was chosen as his successor, in accordance, it was said, with his express desire. Shortly after his accession he routed the Alamanni on the Lacus Benacus (some doubt is thrown upon this); in 269 a great victory over the Goths at Naïssus in Moesia gained him the title of Gothicus. In the following year he died of the plague at Sirmium, in his fifty-sixth year. He enjoyed great popularity, and appears to have been a man of ability and character.

His life was written by Trebellius Pollio, one of the Scriptores Historiae Augusiae; see also Zosimus i. 40-43, the histories of Th. Bernhardt and H. Schiller, and special dissertations by A. Duncker on the life of Claudius (1868) and the defeat of the Alamanni (Annalen des Vereins für nassauische Altertumskunde, 1879); Homo, De Claudio Gothico (1900); Pauly-Wissowa, Realencyclopädie, ii. 2458 ff. (Henze).

CLAUDIUS, MATTHIAS (1740-1815), German poet, otherwise known by the nom de plume of Asmus, was born on the 15th of August 1740 at Reinfeld, near Lübeck, and studied at Jena. He spent the greater part of his life in the little town of Wandsbeck, near Hamburg, where he earned his first literary reputation by editing from 1771 to 1775, a newspaper called the Wandsbecker Bote (Wandsbeck Messenger), in which he published a large number of prose essays and poems. They were written in pure and simple German, and appealed to the popular taste; in many there was a vein of extravagant humour or even burlesque, while others were full of quiet meditation and solemn sentiment. In his later days, perhaps through the influence of Klopstock, with whom he had formed an intimate acquaintance, Claudius became strongly pietistic, and the graver side of his nature showed itself. In 1814 he removed to Hamburg, to the house of his son-in-law, the publisher Friedrich Christoph Perthes, where he died on the 21st of January 1815.

Claudius’s collected works were published under the title of Asmus omnia sua secum portans, oder Sämtliche Werke des Wandsbecker Boten (8 vols., 1775-1812; 13th edition, by C. Redich, 2 vols., 1902). His biography has been written by Wilhelm Herbst (4th ed., 1878). See also M. Schneidereit, M. Claudius, seine Weltanschauung und Lebensweisheit (1898).

CLAUSEL (more correctly Clauzel), BERTRAND, Count (1772-1842), marshal of France, was born at Mirepoix (Ariège) on the 12th of December 1772, and served in the first campaign of the French Revolutionary Wars as one of the volunteers of 1791. In June 1795, having distinguished himself repeatedly in the war on the northern frontier (1792-1793) and the fighting in the eastern Pyrenees (1793-1794), Clausel was made a general of brigade. In this rank he served in Italy in 1798 and 1799, and in the disastrous campaign of the latter year he won great distinction at the battles of the Trebbia and of Novi. In 1802 he served in the expedition to S. Domingo. He became a general of division in December 1802, and after his return to France he was in almost continuous military employment there until in 1806 he was sent to the army of Naples. Soon after this Napoleon made him a grand officer of the Legion of Honour. In 1808-1809 he was with Marmont in Dalmatia, and at the close of 1809 he was appointed to a command in the army of Portugal under Masséna.

Clausel took part in the Peninsular campaigns of 1810 and 1811, including the Torres Vedras campaign, and under Marmont he did excellent service in re-establishing the discipline, efficiency and mobility of the army, which had suffered severely in the retreat from Torres Vedras. In the Salamanca campaign (1812) the result of Clausel’s work was shown in the marching powers of the French, and at the battle of Salamanca, Clausel, who had succeeded to the command on Marmont being wounded, and had himself received a severe wound, drew off his army with the greatest skill, the retreat on Burgos being conducted by him in such a way that the pursuers failed to make the slightest impression, and had themselves in the end to retire from the siege of Burgos (1812). Early in 1813 Clausel was made commander of the Army of the North in Spain, but he was unable to avert the great disaster of Vittoria. Under the supreme command of Soult he served through the rest of the Peninsular War with unvarying distinction. On the first restoration in 1814 he submitted unwillingly to the Bourbons, and when Napoleon returned to France, he hastened to join him. During the Hundred Days he was in command of an army defending the Pyrenean frontier. Even after Waterloo he long refused to recognize the restored government, and he escaped to America, being condemned to death in absence. He took the first opportunity of returning to aid the Liberals in France (1820), sat in the chamber of deputies from 1827 to 1830, and after the revolution of 1830 was at once given a military command. At the head of the army of Algiers, Clausel made a successful campaign, but he was soon recalled by the home government, which desired to avoid complications in Algeria. At the same time he was made a marshal of France (February 1831). For some four years thereafter he urged his Algerian policy upon the chamber of deputies, and finally in 1835 was reappointed commander-in-chief. But after several victories, including the taking of Mascara in 1835, the marshal met with a severe repulse at Constantine in 1836. A change of government in France was primarily responsible for the failure, but public opinion attributed it to Clausel, who was recalled in February 1837. He thereupon retired from active service, and, after vigorously defending his conduct before the deputies, he ceased to take part in public affairs. He lived in complete retirement up to his death at Secourrieu (Garonne) on the 21st of April 1842.

CLAUSEN, GEORGE (1852- ), English painter, was born in London, the son of a decorative artist. He attended the design classes at the South Kensington schools from 1867-1873 with great success. He then worked in the studio of Edwin Long, R.A., and subsequently in Paris under Bouguereau and Robert-Fleury. He became one of the foremost modern painters of landscape and of peasant life, influenced to a certain extent by the impressionists with whom he shared the view that light is the real subject of landscape art. His pictures excel in rendering the appearance of things under flecking outdoor sunlight, or in the shady shelter of a barn or stable. His “Girl at the Gate” was acquired for the nation by the Chantrey Trustees and is now at the National Gallery of British Art (Tate Gallery). He was elected associate of the Royal Academy in 1895, and as professor of painting gave a memorable series of lectures to the students of the schools,—published as Six Lectures on Painting (1904) and Aims and Ideals in Art (1906).

CLAUSEWITZ, KARL VON (1780-1831), Prussian general and military writer, was born at Burg, near Magdeburg, on the 1st of June 1780. His family, originally Polish, had settled in Germany at the end of the previous century. Entering the army in 1792, he first saw service in the Rhine campaigns of 1793-1794, receiving his commission at the siege of Mainz. On his return to garrison duty he set to work so zealously to remedy the defects in his education caused by his father’s poverty, that in 1801 he was admitted to the Berlin Academy for young officers, then directed by Scharnhorst. Scharnhorst, attracted by his pupil’s industry and force of character, paid special attention to his training, and profoundly influenced the development of his mind. In 1803, on Scharnhorst’s recommendation, Clausewitz was made “adjutant” (aide-de-camp) to Prince August, and he served in this capacity in the campaign of Jena (1806), being captured along with the prince by the French at Prenzlau. A prisoner in France and Switzerland for the next two years, he returned to Prussia in 1809; and for the next three years, as a departmental chief in the ministry of war, as a teacher in the military school, and as military instructor to the crown prince, he assisted Scharnhorst in the famous reorganization of the Prussian army. In 1810 he married the countess Marie von Brühl.

On the outbreak of the Russian war in 1812, Clausewitz, like many other Prussian officers, took service with his country’s nominal enemy. This step he justified in a memorial, published for the first time in the Leben Gneisenaus by Pertz (Berlin, 1869). At first adjutant to General Phull, who had himself been a Prussian officer, he served later under Pahlen at Witepsk and Smolensk, and from the final Russian position at Kaluga he was sent to the army of Wittgenstein. It was Clausewitz who negotiated the convention of Tauroggen, which separated the cause of Yorck’s Prussians from that of the French, and began the War of Liberation (see Yorck Von Wartenburg; also Blumenthal’s Die Konvention von Tauroggen, Berlin, 1901). As a Russian officer he superintended the formation of the Landwehr of east Prussia (see Stein, Baron Vom), and in the campaign of 1813 served as chief of staff to Count Wallmoden. He conducted the fight at Göhrde, and after the armistice, with Gneisenau’s permission, published an account of the campaign (Der Feldzug von 1813 bis zum Waffenstillstand, Leipzig, 1813). This work was long attributed to Gneisenau himself. After the peace of 1814 Clausewitz re-entered the Prussian service, and in the Waterloo campaign was present at Ligny and Wavre as General Thielmann’s chief of staff. This post he retained till 1818, when he was promoted major-general and appointed director of the Allgemeine Kriegsschule. Here he remained till in 1830 he was made chief of the 3rd Artillery Inspection at Breslau. Next year he became chief of staff to Field-marshal Gneisenau, who commanded an army of observation on the Polish frontier. After the dissolution of this army Clausewitz returned to his artillery duties; but on the 18th of November 1831 he died at Breslau of cholera, which had proved fatal to his chief also, and a little previously, to his old Russian commander Diebitsch on the other side of the frontier.

His collected works were edited and published by his widow, who was aided by some officers, personal friends of the general, in her task. Of the ten volumes of Hinterlassene Werke über Krieg und Kriegführung (Berlin, 1832-1837, later edition called Clausewitz’s Gesammte Werke, Berlin, 1874) the first three contain Clausewitz’s masterpiece, Vom Kriege, an exposition of the philosophy of war which is absolutely unrivalled. He produced no “system” of strategy, and his critics styled his work “negative” and asked “Qu’a-t-il fondé?” What he had “founded” was that modern strategy which, by its hold on the Prussian mind, carried the Prussian arms to victory in 1866 and 1870 over the “systematic” strategists Krismánic and Bazaine, and his philosophy of war became, not only in Germany but in many other countries, the essential basis of all serious study of the art of war. The English and French translations (Graham, On War, London, 1873; Neuens, La Guerre, Paris, 1849-1852; or Vatry, Théorie de la grande guerre, Paris, 1899), with the German original, place the work at the disposal of students of most nationalities. The remaining volumes deal with military history: vol. 4, the Italian campaign of 1796-97; vols. 5 and 6, the campaign of 1799 in Switzerland and Italy; vol. 7, the wars of 1812, 1813 to the armistice, and 1814; vol. 8, the Waterloo Campaign; vols. 9 and 10, papers on the campaigns of Gustavus Adolphus, Turenne, Luxemburg, Münnich, John Sobieski, Frederick the Great, Ferdinand of Brunswick, &c. He also wrote Über das Leben und den Charakter von Scharnhorst (printed in Ranke’s Historisch-politischer Zeitschrift, 1832). A manuscript on the catastrophe of 1806 long remained unpublished. It was used by v. Höpfner in his history of that war, and eventually published by the Great General Staff in 1888 (French translation, 1903). Letters from Clausewitz to his wife were published in Zeitschrift für preussische Landeskunde (1876). His name is borne by the 28th Field Artillery regiment of the German army.

See Schwartz, Leben des General von Clausewitz und der Frau Marie von Clausewitz (2 vols., Berlin, 1877); von Meerheimb, Karl von Clausewitz (Berlin, 1875), also Memoir in Allgemeine deutsche Biographie; Bernhardi, Leben des Generals von Clausewitz (10th Supplement, Militär. Wochenblatt, 1878).

CLAUSIUS, RUDOLF JULIUS EMMANUEL (1822-1888), German physicist, was born on the 2nd of January 1822 at Köslin, in Pomerania. After attending the Gymnasium at Stettin, he studied at Berlin University from 1840 to 1844. In 1848 he took his degree at Halle, and in 1850 was appointed professor of physics in the royal artillery and engineering school at Berlin. Late in the same year he delivered his inaugural lecture as Privatdocent in the university. In 1855 he became an ordinary professor at Zürich Polytechnic, accepting at the same time a professorship in the university of Zürich In 1867 he moved to Würzburg as professor of physics, and two years later was appointed to the same chair at Bonn, where he died on the 24th of August 1888. During the Franco-German War he was at the head of an ambulance corps composed of Bonn students, and received the Iron Cross for the services he rendered at Vionville and Gravelotte. The work of Clausius, who was a mathematical rather than an experimental physicist, was concerned with many of the most abstruse problems of molecular physics. By his restatement of Carnot’s principle he put the theory of heat on a truer and sounder basis, and he deserves the credit of having made thermodynamics a science; he enunciated the second law, in a paper contributed to the Berlin Academy in 1850, in the well-known form, “Heat cannot of itself pass from a colder to a hotter body.” His results he applied to an exhaustive development of the theory of the steam-engine, laying stress in particular on the conception of entropy. The kinetic theory of gases owes much to his labours, Clerk Maxwell calling him its principal founder. It was he who raised it, on the basis of the dynamical theory of heat, to the level of a theory, and he carried out many numerical determinations in connextion with it, e.g. of the mean free path of a molecule. To Clausius also was due an important advance in the theory of electrolysis, and he put forward the idea that molecules in electrolytes are continually interchanging atoms, the electric force not causing, but merely directing, the interchange. This view found little favour until 1887, when it was taken up by S.A. Arrhenius, who made it the basis of the theory of electrolytic dissociation. In addition to many scientific papers he wrote Die Potentialfunktion und das Potential, 1864, and Abhandlungen über die mechanische Wärmetheorie, 1864-1867.

CLAUSTHAL, or Klausthal, a town of Germany, in the Prussian Harz, lying on a bleak plateau, 1860 ft. above sea-level, 50. m. by rail W.S.W. of Halberstadt. Pop. (1905) 8565. Clausthal is the chief mining town of the Upper Harz Mountains, and practically forms one town with Zellerfeld, which is separated from it by a small stream, the Zellbach. The streets are broad, opportunity for improvement having been given by fires in 1844 and 1854; the houses are mostly of wood. There are an Evangelical and a Roman Catholic church, and a gymnasium. Clausthal has a famous mining college with a mineralogical museum, and a disused mint. Its chief mines are silver and lead, but it also smelts copper and a little gold. Four or five sanatoria are in the neighbourhood. The museum of the Upper Harz is at Zellerfeld.

Clausthal was founded about the middle of the 12th century in consequence probably of the erection of a Benedictine monastery (closed in 1431), remains of which still exist in Zellerfeld. At the beginning of the 16th century the dukes of Brunswick made a new settlement here, and under their directions the mining, which had been begun by the monks, was carried on more energetically. The first church was built at Clausthal in 1570. In 1864 the control of the mines passed into the hands of the state.

CLAVECIN, the French for clavisymbal or harpsichord (Ger. Clavicymbel or Dockenklavier), an abbreviation of the Flemish clavisinbal and Ital. clavicimbalo, a keyboard musical instrument in which the strings were plucked by means of a plectrum consisting of a quill mounted upon a jack.

See Pianoforte; Harpsichord.

CLAVICEMBALO, or Gravicembalo (from Lat. clavis, key, and cymbalum, cymbal; Eng. clavicymbal, clavisymbal; Flemish, clavisinbal; Span. clavisinbanos), a keyboard musical instrument with strings plucked by means of small quill or leather plectra. “Cymbal” (Gr. κύμβαλον, from κύμβη, a hollow vessel) was the old European term for the dulcimer, and hence its place in the formation of the word.

See Pianoforte; Spinet; Virginal.

CLAVICHORD, or Clarichord (Fr. manicorde; Ger. Clavichord; Ital. manicordo; Span. manicordio1), a medieval stringed keyboard instrument, a forerunner of the pianoforte (q.v.), its strings being set in vibration by a blow from a brass tangent instead of a hammer as in the modern instrument. The clavichord, derived from the dulcimer by the addition of a keyboard, consisted of a rectangular case, with or without legs, often very elaborately ornamented with paintings and gilding. The earliest instruments were small and portable, being placed upon a table or stand. The strings, of finely drawn brass, steel or iron wire, were stretched almost parallel with the keyboard over the narrow belly or soundboard resting on the soundboard bridges, often three in number, and wound as in the piano round wrest or tuning pins set in a block at the right-hand side of the soundboard and attached at the other end to hitch pins. The bridges served to direct the course of the strings and to conduct the sound waves to the soundboard. The scaling, or division of the strings determining their vibrating length, was effected by the position of the tangents. These tangents, small wedge-shaped blades of brass, beaten out at the top, were inserted in the end of the arm of the keys. As the latter were depressed by the fingers the tangents rose to strike the strings and stop them at the proper length from the belly-bridge. Thus the string was set in vibration between the point of impact and the belly-bridge just as long as the key was pressed down. The key being released, the vibrations were instantly stopped by a list of cloth acting as damper and interwoven among the strings behind the line of the tangents.

There were two kinds of clavichords—the fretted or gebunden and the fret-free or bund-frei. The term “fretted” was applied to those clavichords which, instead of being provided with a string or set of strings in unison for each note, had one set of strings acting for three or four notes, the arms of the keys being twisted in order to bring the contact of the tangent into the acoustically correct position under the string. The “fret-free” were chromatically-scaled instruments. The first bund-frei clavichord is attributed to Daniel Faber of Crailsheim in Saxony about 1720. This important change in construction increased the size of the instrument, each pair of unison strings requiring a key and tangent of its own, and led to the introduction of the system of tuning by equal temperament upheld by J.S. Bach. Clavichords were made with pedals.2

The tone of the clavichord, extremely sweet and delicate, was characterized by a tremulous hesitancy, which formed its great charm while rendering it suitable only for the private music room or study. Between 1883 and 1893 renewed attention was drawn to the instrument by A.J. Hipkins’s lectures and recitals on keyboard instruments in London, Oxford and Cambridge; and Arnold Dolmetsch reintroduced the art of making clavichords in 1894.

(K. S.)

CLAVICYTHERIUM, a name usually applied to an upright spinet (q.v.), the soundboard and strings of which were vertical instead of horizontal, being thus perpendicular to the keyboard; but it would seem that the clavicytherium proper is distinct from the upright spinet in that its strings are placed horizontally. In the early clavicytherium there was, as in the spinet, only one string (of gut) to each key, set in vibration by means of a small quill or leather plectrum mounted on a jack which acted as in the spinet and harpsichord (q.v.). The clavicytherium or keyed cythera or cetra, names which in the 14th and 15th centuries had been applied somewhat indiscriminately to instruments having strings stretched over a soundboard and plucked by fingers or plectrum, was probably of Italian1 or possibly of south German origin. Sebastian Virdung,2 writing early in the 16th century, describes the clavicytherium as a new invention, having gut strings, and gives an illustration of it. (See Pianoforte.) A certain amount of uncertainty exists as to its exact construction, due to the extreme rarity of unrestored specimens extant, and to the almost total absence of trustworthy practical information.

In a unique specimen with two keyboards dating from the 16th or 17th century, which is in the collection of Baron Alexandre Kraus,3 what appear to be vibrating strings stretched over a soundboard perpendicular to the keyboard are in reality the wires forming part of the mechanism of the action. The arrangement of this mechanism is the distinctive feature of the clavicytherium, for the wires, unlike the strings of the upright spinet, increase in length from left to right, so that the upright harp-shaped back has its higher side over the treble of the keyboard instead of over the bass. The vibrating strings of the clavicytherium in the Kraus Museum are stretched horizontally over two kinds of psalteries fixed one over the other. The first, serving for the lower register, is of the well-known trapezoid shape and lies over the keyboards; it has 30 wire strings in pairs of unisons corresponding to the 15 lowest keys. The second psaltery resembles the kanoun of the Arabs, and has 36 strings in courses of 3 unisons corresponding to the next 12 keys, and 88 very thin strings in courses of 4, completing the 49 keys; the compass thus has a range of four octaves from C to C. The quills of the jacks belonging to the two keyboards are of different length and thickness. The jacks, which work as in the spinet, are attached to the perpendicular wires, disposed in two parallel rows, one for each keyboard.

There is a very fine specimen of the so-called clavicytherium (upright spinet) in the Donaldson museum of the Royal College of Music, London, acquired from the Correr collection at Venice in 1885.4 The instrument is undated, but A.J. Hipkins5 placed it early in the 16th or even at the end of the 15th century. There is German writing on the inside of the back, referring to some agreement at Ulm. The case is of pine-wood, and the natural keys of box-wood. The jacks have the early steel springs, and in 1885 traces were found in the instrument of original brass plectra, all of which point to a very early date.

A learned Italian, Nicolo Vicentino,6 living in the 16th century, describes an archicembalo of his own invention, at which the performer had to stand, having four rows of keys designed to obtain a complete mesotonic pure third tuning. This was an attempt to reintroduce the ancient Greek musical system. This instrument was probably an upright harpsichord or clavicembalo.

For the history of the clavicytherium considered as a forerunner of the pianoforte see Pianoforte.

(K. S.)

CLAVIE, BURNING THE, an ancient Scottish custom still observed at Burghead, a fishing village on the Moray Firth, near Forres. The “clavie” is a bonfire of casks split in two, lighted on the 12th of January, corresponding to the New Year of the old calendar. One of these casks is joined together again by a huge nail (Lat. clavus; hence the term). It is then filled with tar, lighted and carried flaming round the village and finally up to a headland upon which stands the ruins of a Roman altar, locally called “the Douro.” It here forms the nucleus of the bonfire, which is built up of split casks. When the burning tar-barrel falls in pieces, the people scramble to get a lighted piece with which to kindle the New Year’s fire on their cottage hearth. The charcoal of the clavie is collected and is put in pieces up the cottage chimneys, to keep spirits and witches from coming down.

CLAVIÈRE, ÉTIENNE (1735-1793), French financier and politician, was a native of Geneva. As one of the democratic leaders there he was obliged in 1782 to take refuge in England, upon the armed interference of France, Sardinia and Berne in favour of the aristocratic party. There he met other Swiss, among them Marat and Étienne Dumont, but their schemes for a new Geneva in Ireland—which the government favoured—were given up when Necker came to power in France, and Clavière, with most of his comrades, went to Paris. There in 1789 he and Dumont allied themselves with Mirabeau, secretly collaborating for him on the Courrier de Provence and also in preparing the speeches which Mirabeau delivered as his own. It was mainly by his use of Clavière that Mirabeau sustained his reputation as a financier. But Clavière also published some pamphlets under his own name, and through these and his friendship with J.P. Brissot, whom he had met in London, he became minister of finance in the Girondist ministry, from March to the 12th of June 1792. After the 10th of August he was again given charge of the finances in the provisional executive council, though with but indifferent success. He shared in the fall of the Girondists, was arrested on the 2nd of June 1793, but somehow was left in prison until the 8th of December, when, on receiving notice that he was to appear on the next day before the Revolutionary Tribunal, he committed suicide.

CLAVIJO, RUY GONZALEZ DE (d. 1412), Spanish traveller of the 15th century, whose narrative is the first important one of its kind contributed to Spanish literature, was a native of Madrid, and belonged to a family of some antiquity and position. On the return of the ambassadors Pelayo de Sotomayor and Hernan Sanchez de Palazuelos from the court of Timur, Henry III. of Castille determined to send another embassy to the new lord of Western Asia, and for this purpose he selected Clavijo, Gomez de Salazar (who died on the outward journey), and a master of theology named Fray Alonzo Paez de Santa Maria. They sailed from St Mary Port near Cadiz on the 22nd of May 1403, touched at the Balearic Isles, Gaeta and Rhodes, spent some time at Constantinople, sailed along the southern coast of the Black Sea to Trebizond, and proceeded inland by Erzerum, the Ararat region, Tabriz, Sultanieh, Teheran and Meshed, to Samarkand, where they were well received by the conqueror. Their return was at last accomplished, in part after Timur’s death, and with countless difficulties and dangers, and they landed in Spain on the 1st of March 1406. Clavijo proceeded at once to the court, at that time in Alcala de Henares, and served as chamberlain till the king’s death (in the spring of 1406-1407); he then returned to Madrid, and lived there in opulence till his own death on the 2nd of April 1412. He was buried in the chapel of the monastery of St Francis, which he had rebuilt at great expense.

There are two leading MSS. of Clavijo’s narrative—(a) London, British Museum, Additional MSS., 16,613 fols. I, n.-125, v.; (b) Madrid, National Library, 9218; and two old editions of the original Spanish—(1) by Gonçalo Argote de Molina (Seville, 1582), (2) by Antonio de Sancha (Madrid, 1782), both having the misleading titles, apparently invented by Molina, of Historia del gran Tamorlan, and Vida y hazañas del gran Tamorlan (the latter at the beginning of the text itself); a better sub-title is added, viz. Itinerario y enarracion del viage y relacion de la embaxada que Ruy Gonzalez de Clavijo le hizo. Both editors, and especially Sancha, supply general explanatory dissertations. The Spanish text has also been published, with a Russian translation, in vol. xxviii. (pp. 1-455) of the Publications of the Russian Imperial Academy of Sciences (Section of Russian Language, &c.), edited by I.I. Sreznevski (1881). An English version, by Sir Clements Markham, was issued by the Hakluyt Society in 1859 (Narrative of the Embassy of R ... G ... de Clavijo to the Court of Timour). The identification of a great number of the places mentioned by Clavijo is a matter of considerable difficulty, and has given rise to some discussion (see Khanikof’s list in Geographical Magazine (1874), and Sreznevski’s Annotated Index in the Russian edition of 1881). A short account ot Clavijo’s life is given by Alvarez y Baena in the Hijos de Madrid, vol. ix. See also C.R. Beazley, Dawn of Modern Geography, iii. 332-56.

CLAVIJO Y FAJARDO, JOSÉ (1730-1806), Spanish publicist, was born at Lanzarote (Canary Islands) in 1730. He settled in Madrid, became editor of El Pensador, and by his campaign against the public performance of autos sacramentales secured their prohibition in 1765. In 1770 he was appointed director of the royal theatres, a post which he resigned in order to take up the editorship of the Mercurio histórico y politico de Madrid: at the time of his death in 1806 he was secretary to the Cabinet of Natural History. He had in abundance the courage, perseverance and gift of pungent expression which form the equipment of the aggressive journalist, but his work would long since have been forgotten were it not that it put an end to a peculiarly national form of dramatic exposition, and that his love affair with one of Beaumarchais’ sisters suggested the theme of Goethe’s first publication, Clavigo.

CLAY, CASSIUS MARCELLUS (1810-1903), American politician, was born in Madison county, Kentucky, on the 19th of October 1810. He was the son of Green Clay (1757-1826), a Kentucky soldier of the war of 1812 and a relative of Henry Clay. He was educated at Centre College, Danville, Kentucky, and at Yale, where he graduated in 1832. Influenced to some extent by William Lloyd Garrison, he became an advocate of the abolition of slavery, and on his return to his native state, at the risk of social and political ostracism, he gave utterance to his belief. He studied law, but instead of practising devoted himself to a political career. In 1835, 1837 and 1840 he was elected as a Whig to the Kentucky legislature, where he advocated a system of gradual emancipation, and secured the establishment of a public school system, and a much-needed reform in the jury system. In 1841 he was defeated on account of his abolition views. In 1844 he delivered campaign speeches for Henry Clay throughout the North. In 1845 he established, at Lexington, Kentucky, an anti-slavery publication known as The True American, but in the same year his office and press were wrecked by a mob, and he removed the publication office to Cincinnati, Ohio. During this and the earlier period of his career his zeal and hot temper involved him in numerous personal encounters and several duels, in all of which he bore himself with a reckless bravery. In the Mexican War he served as a captain of a Kentucky company of militia, and was taken prisoner, while reconnoitring, during General Scott’s advance on the City of Mexico. He left the Whig party in 1850, and as an anti-slavery candidate for governor of Kentucky polled 5000 votes. In 1856 he joined the Republican party, and wielded considerable influence as a Southern representative in its councils. In 1860 he was a leading candidate for the vice-presidential nomination. In 1861 he was sent by President Lincoln as minister to Russia; in 1862 he returned to America to accept a commission as major-general of volunteers, but in March 1863 was reappointed to his former post at St Petersburg, where he remained until 1869. Disapproving of the Republican policy of reconstruction, he left the party, and in 1872 was one of the organizers of the Liberal-Republican revolt, and was largely instrumental in securing the nomination of Horace Greeley for the presidency. In the political campaigns of 1876 and 1880 he supported the Democratic candidate, but rejoined the Republican party in the campaign of 1884. He died at Whitehall, Kentucky, on the 22nd of July 1903.

See his autobiography, The Life, Memoirs, Writings, and Speeches of Cassius Marcellus Clay (Cincinnati, 1896); and The Writings of Cassius Marcellus Clay (edited with a “Memoir” by Horace Greeley. New York, 1848).

CLAY, CHARLES (1801-1893), English surgeon, was born at Bredbury, near Stockport, on the 27th of December 1801. He began his medical education as a pupil of Kinder Wood in Manchester (where he used to attend John Dalton’s lectures on chemistry), and in 1821 went to Edinburgh to continue his studies there. Qualifying in 1823, he began a general practice in Ashton-under-Lyne, but in 1839 removed to Manchester to practise as an operative and consulting surgeon. It was there that, in 1842, he first performed the operation of ovariotomy with which his name is associated. On this occasion it was perfectly successful, and when in 1865 he published an analysis of 111 cases he was able to show a mortality only slightly above 30%. Although his merits in this matter have sometimes been denied, his claim to the title “Father of Ovariotomy” is now generally conceded, and it is admittted that he deserves the credit not only of having shown how that operation could be made a success, but also of having played an important part in the advance of abdominal surgery for which the 19th century was conspicuous. In spite of the claims of a heavy practice, Clay found time for the pursuit of geology and archaeology. Among the books of which he was the author were a volume of Geological Sketches of Manchester (1839) and a History of the Currency of the Isle of Man (1849), and his collections included over a thousand editions of the Old and New Testaments and a remarkably complete series of the silver and copper coins of the United States. He died at Poulton-le-Fylde, near Preston, on the 19th of September 1893.

CLAY, FREDERIC (1838-1889), English musical composer, the son of James Clay, M.P., who was celebrated as a player of whist and a writer on that subject, was born in Paris on the 3rd of August 1838. He studied music under W.B. Molique in Paris and Moritz Hauptmann at Leipzig. With the exception of a few songs and two cantatas, The Knights of the Cross (1866) and Lalla Rookh (1877),—the latter of which contained his well-known song “I’ll sing thee songs of Araby,”—his compositions were all written for the stage. Clay’s first public appearance was made with an opera entitled Court and Cottage, the libretto of which was written by Tom Taylor. This was produced at Covent Garden in 1862, and was followed by Constance (1865), Ages Ago (1869), and Princess Toto (1875), to name only three of many works which have long since been forgotten. The last two, which were written to libretti by W.S. Gilbert, are among Clay’s most tuneful and most attractive works. He wrote part of the music for Babil and Bijou (1872) and The Black Crook (1873), both of which were produced at the Alhambra. He also furnished incidental music for a revival of Twelfth Night and for the production of James Albery’s Oriana. His last works, The Merry Duchess (1883) and The Golden Ring (1883), the latter written for the reopening of the Alhambra, which had been burned to the ground the year before, showed an advance upon his previous work, and rendered all the more regrettable the stroke of paralysis which crippled his physical and mental energies during the last few years of his life. He died at Great Marlow on the 24th of November 1889.

CLAY, HENRY (1777-1852), American statesman and orator, was born in Hanover county, Virginia, on the 12th of April 1777, and died in Washington on the 29th of June 1852. Few public characters in the United States have been the subject of more heated controversy. His enemies denounced him as a pretender, a selfish intriguer, and an abandoned profligate; his supporters placed him among the sages and sometimes even among the saints. He was an arranger of measures and leader of political forces, not an originator of ideas and systems. His public life covered nearly half a century, and his name and fame rest entirely upon his own merits. He achieved his success despite serious obstacles. He was tall, rawboned and awkward; his early instruction was scant; but he “read books,” talked well, and so, after his admission to the bar at Richmond, Virginia, in 1797, and his removal next year to Lexington, Kentucky, he quickly acquired a reputation and a lucrative income from his law practice.

Thereafter, until the end of life, and in a field where he met, as either friend or foe, John Quincy Adams, Gallatin, Madison, Monroe, Webster, Jackson, Calhoun, Randolph and Benton, his political activity was wellnigh ceaseless. At the age of twenty-two (1799), he was elected to a constitutional convention in Kentucky; at twenty-six, to the Kentucky legislature; at twenty-nine, while yet under the age limit of the United States constitution, he was appointed to an unexpired term (1806-1807) in the United States Senate, where, contrary to custom, he at once plunged into business, as though he had been there all his life. He again served in the Kentucky legislature (1808-1809), was chosen speaker of its lower house, and achieved distinction by preventing an intense and widespread anti-British feeling from excluding the common law from the Kentucky code. A year later he was elected to another unexpired term in the United States Senate, serving in 1810-1811. At thirty-four (1811) he was elected to the United States House of Representatives and chosen speaker on the first day of the session. One of the chief sources of his popularity was his activity in Congress in promoting the war with Great Britain in 1812, while as one of the peace commissioners he reluctantly signed the treaty of Ghent on the 24th of December 1814. During the fourteen years following his first election, he was re-elected five times to the House and to the speakership; retiring for one term (1821-1823) to resume his law practice and retrieve his fortunes. He thus served as speaker in 1811-1814, in 1815-1820 and in 1823-1825. Once he was unanimously elected by his constituents, and once nearly defeated for having at the previous session voted to increase congressional salaries. He was a warm friend of the Spanish-American revolutionists (1818) and of the Greek insurgents (1824). From 1825 to 1829 he served as secretary of state in President John Quincy Adams’s cabinet, and in 1831 he was elected to the United States Senate, where he served until 1842, and again from 1849 until his death.

From the beginning of his career he was in favour of internal improvements as a means of opening up the fertile but inaccessible West, and was opposed to the abuse of official patronage known as “the spoils system.” The most important of the national questions with which Clay was associated, however, were the various phases of slavery politics and protection to home industries. The most prominent characteristics of his public life were his predisposition to “compromises” and “pacifications” which generally failed of their object, and his passionate patriotic devotion to the Union.

His earliest championship of protection was a resolution introduced by him in the Kentucky legislature (1808) which favoured the wearing by its members of home-made clothes; and one in the United States Senate (April His career as a Protectionist. 1810), on behalf of home-grown and home-made supplies for the United States navy, but only to the point of making the nation independent of foreign supply. In 1816 he advocated the Dallas tariff, in which the duties ranged up to 35% on articles of home production, the supply of which could satisfy the home demand; the avowed purpose being to build up certain industries for safety in time of war. In 1824 he advocated high duties to relieve the prevailing distress, which he pictured in a brilliant and effective speech. Although the distress was caused by the reactionary effect of a disordered currency and the inflated prices of the war of 1812, he ascribed it to the country’s dependence on foreign supply and foreign markets. Great Britain, he said, was a shining example of the wisdom of a high tariff. No nation ever flourished without one. He closed his principal speech on the subject in the House of Representatives with a glowing appeal in behalf of what he called “The American System.” In spite of the opposition of Webster and other prominent statesmen, Clay succeeded in enacting a tariff which the people of the Southern states denounced as a “tariff of abominations.” As it overswelled the revenue, in 1832 he vigorously favoured reducing the tariff rates on all articles not competing with American products. His speech in behalf of the measure was for years a protection text-book; but the measure itself reduced the revenue so little and provoked such serious threats of nullification and secession in South Carolina, that, to prevent bloodshed and to forestall a free trade measure from the next Congress, Clay brought forward in 1833 a compromise gradually reducing the tariff rates to an average of 20%. To the Protectionists this was “like a crash of thunder in winter”; but it was received with such favour by the country generally, that its author was hailed as “The Great Pacificator,” as he had been thirteen years before at the time of the Missouri Compromise (see below). As, however, the discontent with the tariff in the South was only a symptom of the real trouble there—the sensitiveness of the slave-power,—Clay subsequently confessed his serious doubts of the policy of his interference.

He was only twenty-two, when, as an opponent of slavery, he vainly urged an emancipation clause for the new constitution of Kentucky, and he never ceased regretting that its failure put his state, in improvements and progress, behind its free neighbours. In 1820 he congratulated the new South American republics on having abolished slavery, but the same year the threats of the Southern states to destroy the Union led him to advocate the “Missouri Compromise,” which, while keeping slavery out of all the rest of the territory acquired by the “Louisiana Purchase” north of Missouri’s southern boundary line, permitted it in that state. Then, greeted with the title of “The Great Pacificator” as a reward for his success, he retired temporarily to private life, with a larger stock of popularity than he had ever had before. Although at various times he had helped to strengthen the law for the recovery of fugitive slaves, declining as secretary of state to aid Great Britain in the further suppression of the slave trade, and demanding the return of fugitives from Canada, yet he heartily supported the colonizing of the slaves in Africa, because slavery was the “deepest stain upon the character of the country,” opposition to which could not be repressed except by “blowing out the moral lights around,” and “eradicating from the human soul the light of reason and the law of liberty.” When the slave power became more aggressive, in and after the year 1831, Clay defended the right of petition for the abolition of slavery in the District of Columbia, and opposed Calhoun’s bill forbidding the use of the mails to “abolition” newspapers and documents. He was luke-warm toward recognizing the independence of Texas, lest it should aid the increase of slave territory, and generally favoured the freedom of speech and press as regards the question of slavery; yet his various concessions and compromises resulted, as he himself declared, in the abolitionists denouncing him as a slaveholder, and the slaveholders as an abolitionist. In 1839, only twelve months after opposing the pro-slavery demands, he prepared an elaborate speech, in order “to set himself right with the South,” which, before its delivery, received pro-slavery approval. While affirming that he was “no friend of slavery” he held abolition and the abolitionists responsible for the hatred, strife, disruption and carnage that menaced the nation. In response, Calhoun extended to him a most hearty welcome, and assigned him to a place on the bench of the penitents. Being a candidate for the presidency Clay had to take the insult without wincing. It was in reference to this speech that he made the oft-quoted remark that he “would rather be right than be president.” While a candidate for president in 1844, he opposed in the “Raleigh letter” the annexation of Texas on many grounds except that of its increasing the slave power, thus displeasing both the men of anti-slavery and those of pro-slavery sentiments. In 1847, after the conquest of Mexico, he made a speech against the annexation of that country or the acquiring of any foreign territory for the spread of slavery. Although in 1849 he again vainly proposed emancipation in Kentucky, he was unanimously elected to the United States Senate, where in 1850 he temporarily pacified both sections of the country by successfully offering, for the sake of the “peace, concord and harmony of these states,” a measure or series of measures that became known as the “Compromise of 1850.” It admitted California as a free state, organized Utah and New Mexico as Territories without reference to slavery, and enacted a more efficient fugitive slave law. In spite of great physical weakness he made several earnest speeches in behalf of these measures to save the Union.

Another conspicuous feature of Clay’s public career was his absorbing and rightful, but constantly ungratified, ambition to be president of the United States. His name in connexion therewith was mentioned comparatively early, and in 1824, with W.H. Crawford, Andrew Jackson, and John Quincy Adams, he was a candidate for that office. There being no choice by the people, and the House of Representatives having elected Adams, Clay was accused by Jackson and his friends of making a corrupt bargain whereby, in payment of his vote and influence for Adams, he was appointed secretary of state. This made Jackson Clay’s lifelong enemy, and ever after kept Clay busy explaining and denying the allegation. In 1832 Clay was unanimously nominated for the presidency by the National Republicans; Jackson, by the Democrats. The main issue was the policy of continuing the United States Bank, which in 1811 Clay had opposed, but in 1816 and always subsequently warmly favoured. A majority of the voters approved of Jackson’s fight against what Clay had once denounced as a dangerous and unconstitutional monopoly. Clay made the mistake of supposing that he could arouse popular enthusiasm for a moneyed corporation in its contest with the great military “hero of New Orleans.” In 1839 he was a candidate for the Whig nomination, but by a secret ballot his enemies defeated him in the party convention, held in December of that year, and nominated William Henry Harrison. The result threw Clay into paroxysms of rage, and he violently complained that his friends always used him as their candidate when he was sure to be defeated, and betrayed him when he or any one could have been elected. In 1844 he was nominated by the Whigs against James K. Polk, the Democratic candidate. By an audacious fraud that represented him as an enemy, and Polk as a friend of protection, Clay lost the vote of Pennsylvania; and he lost the vote of New York by his own letter abating the force of his previous opposition to the annexation of Texas. Even his enemies felt that his defeat by Polk was almost a national calamity. In 1848, Zachary Taylor, a Mexican War hero, and hardly even a convert to the Whig party, defeated Clay for the nomination, Kentucky herself deserting her “favourite son.”

Clay’s quick intelligence and sympathy, and his irreproachable conduct in youth, explain his precocious prominence in public affairs. In his persuasiveness as an orator and his charming personality lay the secret of his power. He had early trained himself in the art of speech-making, in the forest, the field and even the barn, with horse and ox for audience. By contemporaries his voice was declared to be the finest musical instrument that they ever heard. His eloquence was in turn majestic, fierce, playful, insinuating; his gesticulation natural, vivid, large, powerful. In public he was of magnificent bearing, possessing the true oratorical temperament, the nervous exaltation that makes the orator feel and appear a superior being, transfusing his thought, passion and will into the mind and heart of the listener; but his imagination frequently ran away with his understanding, while his imperious temper and ardent combativeness hurried him and his party into disadvantageous positions. The ease, too, with which he outshone men of vastly greater learning lured him from the task of intense and arduous study. His speeches were characterized by skill of statement, ingenious grouping of facts, fervent diction, and ardent patriotism; sometimes by biting sarcasm, but also by superficial research, half-knowledge and an unwillingness to reason a proposition to its logical results. In private, his never-failing courtesy, his agreeable manners and a noble and generous heart for all who needed protection against the powerful or the lawless, endeared him to hosts of friends. His popularity was as great and as inexhaustible among his neighbours as among his fellow-citizens generally. He pronounced upon himself a just judgment when he wrote: “If any one desires to know the leading and paramount object of my public life, the preservation of this Union will furnish him the key.”

See Calvin Colton, The Works of Henry Clay (6 vols., New York, 1857; new ed., 7 vols., New York, 1898), the first three volumes of which are an account of Clay’s “Life and Times”; Carl Schurz, Henry Clay (2 vols., Boston, 1887), in the “American Statesmen” series; and the life by T. Hart Clay (1910).

(C. S.)

CLAY (from O. Eng. claeg, a word common in various forms to Teutonic languages, cf. Ger. Klei), commonly defined as a fine-grained, almost impalpable substance, very soft, more or less coherent when dry, plastic and retentive of water when wet; it has an “earthy” odour when breathed upon or moistened, and consists essentially of hydrous aluminium silicate with various impurities. Of clay are formed a great number of rocks, which collectively are known as “clay-rocks” or “pelitic rocks” (from Gr. πηλός, clay), e.g. mudstone, shale, slate: these exhibit in greater or less perfection the properties above described according to their freedom from impurities. In nature, clays are rarely free from foreign ingredients, many of which can be detected with the unaided eye, while others may be observed by means of the microscope. The commonest impurities are:— (1) organic matter, humus, &c. (exemplified by clay-soils with an admixture of peat, oil shales, carbonaceous shales); (2) fossils (such as plants in the shales of the Lias and Coal Measures, shells in clays of all geological periods and in fresh water marls); (3) carbonate of lime (rarely altogether absent, but abundant in marls, cement-stones and argillaceous limestones); (4) sulphide of iron, as pyrite or marcasite (when finely diffused, giving the clay a dark grey-blue colour, which weathers to brown—e.g. London Clay; also as nodules and concretions, e.g. Gault); (5) oxides of iron (staining the clay bright red when ferric oxide, red ochre; yellow when hydrous, e.g. yellow ochre); (6) sand or detrital silica (forming loams, arenaceous clays, argillaceous sandstones, &c.). Less frequently present are the following:—rock salt (Triassic clays, and marls of Cheshire, &c.); gypsum (London Clay, Triassic clays); dolomite, phosphate of lime, vivianite (phosphate of iron), oxides of manganese, copper ores (e.g. Kupferschiefer), wavellite and amber. As the impurities increase in amount the clay rocks pass gradually into argillaceous sands and sandstones, argillaceous limestones and dolomites, shaly coals and clay ironstones.

Natural clays, even when most pure, show a considerable range of composition, and hence cannot be regarded as consisting of a single mineral; clay is a rock, and has that variability which characterizes all rocks. Of the essential properties of clay some are merely physical, and depend on the minute size of the particles. If any rock be taken (even a piece of pure quartz) and crushed to a very fine powder, it will show some of the peculiarities of clays; for example, it will be plastic, retentive of moisture, impermeable to water, and will shrink to some extent if the moist mass be kneaded, and then allowed to dry. It happens, however, that many rocks are not disintegrated to this extreme degree by natural processes, and weathering invariably accompanies disintegration. Quartz, for example, has little or no cleavage, and is not attacked by the atmosphere. It breaks up into fragments, which become rounded by attrition, but after they reach a certain minuteness are borne along by currents of water or air in a state of suspension, and are not further reduced in size. Hence sands are more coarse grained than clays. A great number of rock-forming minerals, however, possess a good cleavage, so that when bruised they split into thin fragments; many of these minerals decompose somewhat readily, yielding secondary minerals, which are comparatively soft and have a scaly character, with eminently perfect cleavages, which facilitate splitting into exceedingly thin plates. The principal substances of this description are kaolin, muscovite and chlorite. Kaolin and muscovite are formed principally after felspar (and the felspars are the commonest minerals of all crystalline rocks); also from nepheline, leucite, scapolite and a variety of other rock-forming minerals. Chlorite arises from biotite, augite and hornblende. Serpentine, which may be fibrous or scaly, is a secondary product of olivine and certain pyroxenes. Clays consist essentially of the above ingredients (although serpentine is not known to take part in them to any extent, it is closely allied to chlorite). At the same time other substances are produced as decomposition goes on. They are principally finely divided quartz, epidote, zoisite, rutile, limonite, calcite, pyrites, and very small particles of these are rarely absent from natural clays. These fine-grained materials are at first mixed with broken and more or less weathered rock fragments and coarser mineral particles in the soil and subsoil, but by the action of wind and rain they are swept away and deposited in distant situations. “Loess” is a fine calcareous clay, which has been wind-borne, and subsequently laid down on the margins of dry steppes and deserts. Most clays are water-borne, having been carried from the surface of the land by rain and transported by the brooks and rivers into lakes or the sea. In this state the fine particles are known as “mud.” They are deposited where the currents are checked and the water becomes very still. If temporarily laid down in other situations they are ultimately lifted again and removed. A little clay, stirred up with water in a glass vessel, takes hours to settle, and even after two or three days some remains in suspension; in fact, it has been suggested that in such cases the clay forms a sort of “colloidal solution” in the water. Traces of dissolved salts, such as common salt, gypsum or alum, greatly accelerate deposition. For these reasons the principal gathering places of fine pure clays are deep, still lakes, and the sea bottom at considerable distances from the shore. The coarser materials settle nearer the land, and the shallower portions of the sea floor are strewn with gravel and sand, except in occasional depressions and near the mouths of rivers where mud may gather. Farther out the great mud deposits begin, extending from 50 to 200 m. from the land, according to the amount of sediment brought in, and the rate at which the water deepens. A girdle of mud accumulations encircles all the continents. These sediments are fine and tenacious; their principal components, in addition to clay, being small grains of quartz, zircon, tourmaline, hornblende, felspar and iron compounds. Their typical colour is blackish-blue, owing to the abundance of sulphuretted hydrogen; when fresh they have a sulphurous odour, when weathered they are brown, as their iron is present as hydrous oxides (limonite, &c). These deposits are tenanted by numerous forms of marine life, and the sulphur they contain is derived from decomposing organic matter. Occasionally water-logged plant débris is mingled with the mud. In a few places a red colour prevails, the iron being mostly oxidized; elsewhere the muds are green owing to abundant glauconite. Traced landwards the muds become more sandy, while on their outer margins they grade into the abysmal deposits, such as the globigerina ooze (see Ocean and Oceanography). Near volcanoes they contain many volcanic minerals, and around coral islands they are often in large part calcareous.

Microscopic sections of some of the more coherent clays and shales may be prepared by saturating them with Canada balsam by long boiling, and slicing the resultant mass in the same manner as one of the harder rocks. They show that clay rocks contain abundant very small grains of quartz (about 0.01 to 0.05 mm. in diameter), with often felspar, tourmaline, zircon, epidote, rutile and more or less calcite. These may form more than one-third of an ordinary shale; the greater part, however, consists of still smaller scales of other minerals (0.01 mm. in diameter and less than this). Some of these are recognizable as pale yellowish and white mica; others seem to be chlorite, the remainder is perhaps kaolin, but, owing to the minute size of the flakes, they yield very indistinct reactions to polarized light. They are also often stained with iron oxide and organic substances, and in consequence their true nature is almost impossible to determine. It is certain, however, that the finer-grained rocks are richest in alumina, and in combined water; hence the inference is clear that kaolin or some other hydrous aluminium silicate is the dominating constituent. These results are confirmed by the mechanical analysis of clays. This process consists in finely pulverizing the soil or rock, and levigating it in vessels of water. A series of powders is obtained progressively finer according to the time required to settle to the bottom of the vessel. The clay is held to include those particles which have less than 0.005 mm. diameter, and contains a higher percentage of alumina than any of the other ingredients.

As might be inferred from the differences they exhibit in other respects, clay rocks vary greatly in their chemical composition. Some of them contain much iron (yellow, blue and red clays); others contain abundant calcium carbonate (calcareous clays and marls). Pure clays, however, may be found almost quite free from these substances. Their silica ranges from about 60 to 45%, varying in accordance with the amount of quartz and alkali-felspar present. It is almost always more than would be the case if the rock consisted of kaolin mixed with muscovite. Alumina is high in the finer clays (18 to 30%), and they are the most aluminous of all sediments, except bauxite. Magnesia is never absent, though its amount may be less than 1%; it is usually contained in minerals of the chlorite group, but partly also in dolomite. The alkalis are very interesting; often they form 5 or 10% of the whole rock; they indicate abundance of white micas or of undecomposed particles of felspar. Some clays, however, such as fireclays, contain very little potash or soda, while they are rich in alumina; and it is a fair inference that hydrated aluminous silicates, such as kaolin, are well represented in these rocks. There are, in fact, a few clays which contain about 45% of alumina, that is to say, more than in pure kaolin. It is probable that these are related to bauxite and certain kinds of laterite.

A few of the most important clay rocks, such as china-clay, brick-clay, red-clay and shale, may be briefly described here.

China-clay is white, friable and earthy. It occurs in regions of granite, porphyry and syenite, and usually occupies funnel-shaped cavities of no great superficial area, but of considerable depth. It consists of very fine scaly kaolin, larger, shining plates of white mica, grains of quartz and particles of semi-decomposed felspar, tourmaline, zircon and other minerals, which originally formed part of the granite. These clays are produced by the decomposition of the granite by acid vapours, which are discharged after the igneous rock has solidified (“fumarole or pneumatolytic action”). Fluorine and its compounds are often supposed to have been among the agencies which produce this change, but more probably carbonic acid played the principal role. The felspar decomposes into kaolin and quartz; its alkalis are for the most part set free and removed in solution, but are partly retained in the white mica which is constantly found in crude china-clays. Semi-decomposed varieties of the granite are known as china-stone. The kaolin may be washed away from its original site, and deposited in hollows or lakes to form beds of white clay, such as pipe-clay; in this case it is always more or less impure. Yellow and pinkish varieties of china-clay and pipe-clay contain a small quantity of oxide of iron. The best known localities for china-clay are Cornwall, Limoges (France), Saxony, Bohemia and China; it is found also in Pennsylvania, N. Carolina and elsewhere in the United States.

Fire-clays include all those varieties of clay which are very refractory to heat. They must contain little alkalis, lime, magnesia and iron, but some of them are comparatively rich in silica. Many of the clays which pass under this designation belong to the Carboniferous period, and are found underlying seams of coal. Either by rapid growth of vegetation, or by subsequent percolation of organic solutions, most of the alkalis and the lime have been carried away.

Any argillaceous material, which can be used for the manufacture of bricks, may be called a brick-clay. In England, Kimmeridge Clay, Lias clays, London Clay and pulverized shale and slate are all employed for this purpose. Each variety needs special treatment according to its properties. The true brick-clays, however, are superficial deposits of Pleistocene or Quaternary age, and occur in hollows, filled-up lakes and deserted stream channels. Many of them are derived from the glacial boulder-clays, or from the washing away of the finer materials contained in older clay formations. They are always very impure.

The red-clay is an abysmal formation, occurring in the sea bottom in the deepest part of the oceans. It is estimated to cover over fifty millions of square miles, and is probably the most extensive deposit which is in course of accumulation at the present day. In addition to the reddish or brownish argillaceous matrix it contains fresh or decomposed crystals of volcanic minerals, such as felspar, augite, hornblende, olivine and pumiceous or palagonitic rocks. These must either have been ejected by submarine volcanoes or drifted by the wind from active vents, as the fine ash discharged by Krakatoa was wafted over the whole globe. Larger rounded lumps of pumice, found in the clay, have probably floated to their present situations, and sank when decomposed, all their cavities becoming filled with sea water. Crystals of zeolites (phillipsite) form in the red-clay as radiate, nodular groups. Lumps of manganese oxide, with a black, shining outer surface, are also characteristic of this deposit, and frequently encrust pieces of pumice or animal remains. The only fossils of the clay are radiolaria, sharks’ teeth and the ear-bones of whales, precisely those parts of the skeleton of marine creatures which are hardest and can longest survive exposure to sea-water. Their comparative abundance shows how slowly the clay gathers. Small rounded spherules of iron, believed by some to be meteoric dust, have also been obtained in some numbers. Among the rocks of the continents nothing exactly the same as this remarkable deposit is known to occur, though fine dark clays, with manganese nodules, are found in many localities, accompanied by other rocks which indicate deep-water conditions of deposit.

Another type of red-clay is found in caves, and is known as cave-earth or red-earth (terra rossa). It is fine, tenacious and bright red, and represents the insoluble and thoroughly weathered impurities which are left behind when the calcareous matter is removed in solution by carbonated waters. Similar residual clays sometimes occur on the surface of areas of limestone in hollows and fissures formed by weathering.

Boulder-clay is a coarse unstratified deposit of fine clay, with more or less sand, and boulders of various sizes, the latter usually marked with glacial striations.

Some clay rocks which have been laid down by water are very uniform through their whole thickness, and are called mud-stones. Others split readily into fine leaflets or laminae parallel to their bedding, and this structure is accentuated by the presence of films of other materials, such as sand or vegetable debris. Laminated clays of this sort are generally known as shales; they occur in many formations but are very common in the Carboniferous. Some of them contain much organic debris, and when distilled yield paraffin oil, wax, compounds of ammonia, &c. In these oil-shales there are clear, globular, yellow bodies which seem to be resinous. It has been suggested that the admixture of large quantities of decomposed fresh-water algae among the original mud is the origin of the paraffins. In New South Wales, Scotland and several parts of America such oil-shales are worked on a commercial scale. Many shales contain great numbers of ovoid or rounded septarian nodules of clay ironstone. Others are rich in pyrites, which, on oxidation, produces sulphuric acid; this attacks the aluminous silicates of the clay and forms aluminium sulphate (alum shales). The lias shales of Whitby contain blocks of semi-mineralized wood, or jet, which is black with a resinous lustre, and a fibrous structure. The laminated structure of shales, though partly due to successive very thin sheets of deposit, is certainly dependent also on the vertical pressure exerted by masses of super-incumbent rock; it indicates a transition to the fissile character of clay slates.

(J. S. F.)

CLAY CROSS, an urban district in the Chesterfield parliamentary division of Derbyshire, England, near the river Amber, on the Midland railway, 5 m. S. of Chesterfield. Pop. (1901) 8358. The Clay Cross Colliery and Ironworks Company, whose mines were for a time leased by George Stephenson, employ a great number of hands.

CLAYMORE (from the Gaelic claidheamh mòr, “great sword”), the old two-edged broadsword with cross hilt, of which the guards were usually turned down, used by the Highlanders of Scotland. The name is also wrongly applied to the single-edged basket-hilted sword adopted in the 16th century and still worn as the full-dress sword in the Highland regiments of the British army.

CLAYS, PAUL JEAN (1819-1900), Belgian artist, was born at Bruges in 1819, and died at Brussels in 1900. He was one of the most esteemed marine painters of his time, and early in his career he substituted a sincere study of nature for the extravagant and artificial conventionality of most of his predecessors. When he began to paint, the sea was considered by continental artists as worth representing only under its most tempestuous aspects. Artists cared only for the stirring drama of storm and wreck, and they clung still to the old-world tradition of the romantic school. Clays was the first to appreciate the beauty of calm waters reflecting the slow procession of clouds, the glories of sunset illuminating the sails of ships or gilding the tarred sides of heavy fishing-boats. He painted the peaceful life of rivers, the poetry of wide estuaries, the regulated stir of roadsteads and ports. And while he thus broke away from old traditions he also threw off the trammels imposed on him by his master, the marine painter Theodore Gudin (1802-1880). Endeavouring only to give truthful expression to the nature that delighted his eyes, he sought to render the limpid salt atmosphere, the weight of waters, the transparence of moist horizons, the gem-like sparkle of the sky. A Fleming in his feeling for colour, he set his palette with clean strong hues, and their powerful harmonies were in striking contrast with the rusty, smoky tones then in favour. If he was not a “luminist” in the modern use of the word, he deserves at any rate to be classed with the founders of the modern naturalistic school. This conscientious and healthy interpretation, to which the artist remained faithful, without any important change, to the end of an unusually long and laborious career, attracted those minds which aspired to be bold, and won over those which were moderate. Clays soon took his place among the most famous Belgian painters of his generation, and his pictures, sold at high prices, are to be seen in most public and private galleries. We may mention, among others, “The Beach at Ault,” “Boats in a Dutch Port,” and “Dutch Boats in the Flushing Roads,” the last in the National Gallery, London. In the Brussels gallery are “The Port of Antwerp,” “Coast near Ostend,” and a “Calm on the Scheldt”; in the Antwerp museum, “The Meuse at Dordrecht”; in the Pinakothek at Munich, “The Open North Sea”; in the Metropolitan Museum of Fine Arts, New York, “The Festival of the Freedom of the Scheldt at Antwerp in 1863”; in the palace of the king of the Belgians, “Arrival of Queen Victoria at Ostend in 1857”; in the Bruges academy, “Port of Feirugudo, Portugal.” Clays was a member of several Academies, Belgian and foreign, and of the Order of Leopold, the Legion of Honour, &c.

See Camille Lemonnier, Histoire des Beaux-Arts (Brussels, 1887).

(O. M.*)

CLAYTON, JOHN MIDDLETON (1796-1856), American politician, was born in Dagsborough, Sussex county, Delaware, on the 24th of July 1796. He came of an old Quaker family long prominent in the political history of Delaware. He graduated at Yale in 1815, and in 1819 began to practise law at Dover, Delaware, where for a time he was associated with his cousin, Thomas Clayton (1778-1854), subsequently a United States senator and chief-justice of the state. He soon gained a large practice. He became a member of the state House of Representatives in 1824, and from December 1826 to October 1828 was secretary of state of Delaware. In 1829, by a combination of anti-Jackson forces in the state legislature, he was elected to the United States Senate. Here his great oratorical gifts gave him a high place as one of the ablest and most eloquent opponents of the administration. In 1831 he was a member of the Delaware constitutional convention, and in 1835 he was returned to the Senate as a Whig, but resigned in the following year. In 1837-1839 he was chief justice of Delaware. In 1845 he again entered the Senate, where he opposed the annexation of Texas and the Mexican War, but advocated the active prosecution of the latter once it was begun. In March 1849 he became secretary of state in the cabinet of President Zachary Taylor, to whose nomination and election his influence had contributed. His brief tenure of the state portfolio, which terminated on the 22nd of July 1850, soon after Taylor’s death, was notable chiefly for the negotiation with the British minister, Sir Henry Lytton Bulwer, of the Clayton-Bulwer Treaty (q.v.). He was once more a member of the Senate from March 1853 until his death at Dover, Delaware, on the 9th of November 1856. By his contemporaries Clayton was considered one of the ablest debaters and orators in the Senate.

See the memoir by Joseph P. Comegys in the Papers of the Historical Society of Delaware, No. 4 (Wilmington, 1882).

CLAYTON-BULWER TREATY, a famous treaty between the United States and Great Britain, negotiated in 1850 by John M. Clayton and Sir Henry Lytton Bulwer (Lord Dalling), in consequence of the situation created by the project of an interoceanic canal across Nicaragua, each signatory being jealous of the activities of the other in Central America. Great Britain had large and indefinite territorial claims in three regions—Belize or British Honduras, the Mosquito Coast and the Bay Islands.1 On the other hand, the United States, without territorial claims, held in reserve, ready for ratification, treaties with Nicaragua and Honduras, which gave her a certain diplomatic vantage with which to balance the de facto dominion of Great Britain. Agreement on these points being impossible and agreement on the canal question possible, the latter was put in the foreground. The resulting treaty had four essential points. It bound both parties not to “obtain or maintain” any exclusive control of the proposed canal, or unequal advantage in its use. It guaranteed the neutralization of such canal. It declared that, the intention of the signatories being not only the accomplishment of “a particular object”—i.e. that the canal, then supposedly near realization, should be neutral and equally free to the two contracting powers—“but also to establish a general principle,” they agreed “to extend their protection by treaty stipulation to any other practicable communications, whether by canal or railway, across the isthmus which connects North and South America.” Finally, it stipulated that neither signatory would ever “occupy, or fortify, or colonize, or assume or exercise any dominion over Nicaragua, Costa Rica, the Mosquito Coast or any part of Central America,” nor make use of any protectorate or alliance, present or future, to such ends.

The treaty was signed on the 19th of April, and was ratified by both governments; but before the exchange of ratifications Lord Palmerston, on the 8th of June, directed Sir H. Bulwer to make a “declaration” that the British government did not understand the treaty “as applying to Her Majesty’s settlement at Honduras, or its dependencies.” Mr Clayton made a counter-declaration, which recited that the United States did not regard the treaty as applying to “the British settlement in Honduras commonly called British-Honduras ... nor the small islands in the neighbourhood of that settlement which may be known as its dependencies”; that the treaty’s engagements did apply to all the Central American states, “with their just limits and proper dependencies”; and that these declarations, not being submitted to the United States Senate, could of course not affect the legal import of the treaty. The interpretation of the declarations soon became a matter of contention. The phraseology reflects the effort made by the United States to render impossible a physical control of the canal by Great Britain through the territory held by her at its mouth—the United States losing the above-mentioned treaty advantages,—just as the explicit abnegations of the treaty rendered impossible such control politically by either power. But great Britain claimed that the excepted “settlement” at Honduras was the “Belize” covered by the extreme British claim; that the Bay Islands were a dependency of Belize; and that, as for the Mosquito Coast, the abnegatory clauses being wholly prospective in intent, she was not required to abandon her protectorate. The United States contended that the Bay Islands were not the “dependencies” of Belize, these being the small neighbouring islands mentioned in the same treaties; that the excepted “settlement” was the British-Honduras of definite extent and narrow purpose recognized in British treaties with Spain; that she had not confirmed by recognition the large, indefinite and offensive claims whose dangers the treaty was primarily designed to lessen; and that, as to the Mosquito Coast, the treaty was retrospective, and mutual in the rigour of its requirements, and as the United States had no de facto possessions, while Great Britain had, the clause binding both not to “occupy” any part of Central America or the Mosquito Coast necessitated the abandonment of such territory as Great Britain was already actually occupying or exercising dominion over; and the United States demanded the complete abandonment of the British protectorate over the Mosquito Indians. It seems to be a just conclusion that when in 1852 the Bay Islands were erected into a British “colony” this was a flagrant infraction of the treaty; that as regards Belize the American arguments were decidedly stronger, and more correct historically; and that as regards the Mosquito question, inasmuch as a protectorate seems certainly to have been recognized by the treaty, to demand its absolute abandonment was unwarranted, although to satisfy the treaty Great Britain was bound materially to weaken it.

In 1859-1860, by British treaties with Central American states, the Bay Islands and Mosquito questions were settled nearly in accord with the American contentions.2 But by the same treaties Belize was accorded limits much greater than those contended for by the United States. This settlement the latter power accepted without cavil for many years.

Until 1866 the policy of the United States was consistently for inter-oceanic canals open equally to all nations, and unequivocally neutralized; indeed, until 1880 there was practically no official divergence from this policy. But in 1880-1884 a variety of reasons were advanced why the United States might justly repudiate at will the Clayton-Bulwer Treaty.3 The new policy was based on national self-interest. The arguments advanced on its behalf were quite indefensible in law and history, and although the position of the United States in 1850-1860 was in general the stronger in history, law and political ethics, that of Great Britain was even more conspicuously the stronger in the years 1880-1884. In 1885 the former government reverted to its traditional policy, and the Hay-Pauncefote Treaty of 1902, which replaced the Clayton-Bulwer Treaty, adopted the rule of neutralization for the Panama Canal.

See the collected diplomatic correspondence in I.D. Travis, History of the Clayton-Bulwer Treaty (Ann Arbor, Mich., 1899); J.H. Latané, Diplomatic Relations of the United States and Spanish America (Baltimore, 1900); T.J. Lawrence, Disputed Questions of Modern International Law (2nd ed., Cambridge, England, 1885); Sir E.L. Bulwer in 99 Quarterly Rev. 235-286, and Sir H. Bulwer in 104 Edinburgh Rev. 280-298.

CLAY-WITH-FLINTS, in geology, the name given by W. Whitaker in 1861 to a peculiar deposit of stiff red, brown or yellow clay containing unworn whole flints as well as angular shattered fragments, also with a variable admixture of rounded flint, quartz, quartzite and other pebbles. It occurs “in sheets or patches of various sizes over a large area in the south of England, from Hertfordshire on the north to Sussex on the south, and from Kent on the east to Devon on the west. It almost always lies on the surface of the Upper Chalk, but in Dorset it passes on to the Middle and Lower Chalk, and in Devon it is found on the Chert-Beds of the Selbornian group” (A.J. Jukes-Browne, “The Clay-with-Flints, its Origin and Distribution,” Q.J.G.S., vol. lxii., 1906, p. 132). Many geologists have supposed, and some still hold, that the Clay-with-Flints is the residue left by the slow solution and disintegration of the Chalk by the processes of weathering; on the other hand, it has long been known that the deposit very frequently contains materials foreign to the Chalk, derived either from the Tertiary rocks or from overlying drift. In the paper quoted above, Jukes-Browne ably summarizes the evidence against the view that the deposit is mainly a Chalk residue, and brings forward a good deal of evidence to show that many patches of the Clay-with-Flints lie upon the same plane and may be directly associated with Reading Beds. He concludes “that the material of the Clay-with-Flints has been chiefly and almost entirely derived from Eocene clay, with addition of some flints from the Chalk; that its presence is an indication of the previous existence of Lower Eocene Beds on the same site and nearly at the same relative level, and, consequently, that comparatively little Chalk has been removed from beneath it. Finally, I think that the tracts of Clay-with-Flints have been much more extensive than they are now” (loc. cit. p. 159).

It is noteworthy that the Clay-with-Flints is developed over an area which is just beyond the limits of the ice sheets of the Glacial epoch, and the peculiar conditions of late Pliocene and Pleistocene times; involving heavy rains, snow and frost, may have had much to do with the mingling of the Tertiary and Chalky material. Besides the occurrence in surface patches, Clay-with-Flints is very commonly to be observed descending in “pipes” often to a considerable depth into the Chalk; here, if anywhere, the residual chalk portion of the deposit should be found, and it is surmised that a thin layer of very dark clay with darkly stained flints, which appears in contact with the sides and bottom of the pipe, may represent all there is of insoluble residue.

A somewhat similar deposit, a “conglomérat de silex” or “argue à silex,” occurs at the base of the Eocene on the southern and western borders of the Paris basin, in the neighbourhood of Chartres, Thimerais and Sancerrois.

(J. A. H.)

CLAZOMENAE (mod. Kelisman), an ancient town of Ionia and a member of the Ionian Dodecapolis (Confederation of Twelve Cities), on the Gulf of Smyrna, about 20 m. W. of that city. Though not in existence before the arrival of the Ionians in Asia, its original founders were largely settlers from Phlius and Cleonae. It stood originally on the isthmus connecting the mainland with the peninsula on which Erythrae stood; but the inhabitants, alarmed by the encroachments of the Persians, removed to one of the small islands of the bay, and there established their city. This island was connected with the mainland by Alexander the Great by means of a pier, the remains of which are still visible. During the 5th century it was for some time subject to the Athenians, but about the middle of the Peloponnesian war (412 B.C.) it revolted. After a brief resistance, however, it again acknowledged the Athenian supremacy, and repelled a Lacedaemonian attack. Under the Romans Clazomenae was included in the province of Asia, and enjoyed an immunity from taxation. The site can still be made out, in the neighbourhood of Vourla, but nearly every portion of its ruins has been removed. It was the birthplace of the philosopher Anaxagoras. It is famous for its painted terra-cotta sarcophagi, which are the finest monuments of Ionian painting in the 6th century B.C.

(E. GR.)

CLEANTHES (c. 301-232 or 252 B.C.), Stoic philosopher, born at Assos in the Troad, was originally a boxer. With but four drachmae in his possession he came to Athens, where he listened first to the lectures of Crates the Cynic, and then to those of Zeno, the Stoic, supporting himself meanwhile by working all night as water-carrier to a gardener (hence his nickname Φρεάντλης). His power of patient endurance, or perhaps his slowness, earned him the title of “the Ass”; but such was the esteem awakened by his high moral qualities that, on the death of Zeno in 263, he became the leader of the school. He continued, however, to support himself by the labour of his own hands. Among his pupils were his successor, Chrysippus, and Antigonus, king of Macedon, from whom he accepted 2000 minae. The manner of his death was characteristic. A dangerous ulcer had compelled him to fast for a time. Subsequently he continued his abstinence, saying that, as he was already half-way on the road to death, he would not trouble to retrace his steps.