Book 9 — Scientific Discoveries and Proceedings of Learned Societies.

Our countryman, Mr. E. E. Squier, is now in London, where he has just brought out an edition of his work on Nicaragua, and he recently addressed the Royal Society of Literature on the Mexican Hieroglyphics, as exhibited in the publication of Lord Kingsborough. The MSS. engraved in this splendid work are chiefly rituals—a few only being historical. Of the events referred to, some occurred 600 years B. C., and one reference appears to be to an eclipse that happened 900 years B. C. The dualistic principle runs through the Mexican Pantheon; it consists, i. e., of male and female divinities, representing the active and passive principles in nature. We find also in this mythology a trinity, corresponding to Brahma, Vishnu, and Siva—the productive, preserving, and destroying powers—in the Indian. Inferior deities represent attributes; each name denoting an attribute; hence, the gods of the Mexicans were far from being so numerous as they appear to be. The supreme divinity had about fifty names: several of which agree in signification with those applied in the Old Testament to Jehovah. He is represented wearing a mask, to intimate that he cannot be looked upon. For each character or attribute there was a different mask, frequently representing animals; particular animals being dedicated to particular deities. The different deities were likewise symbolized by different colors—the water-god by blue—the god of fire by red—the inferior divinities by a dark tint, &c. Peculiar symbols likewise appear as crests, or head ornaments. The lecturer stated that the Mexican records unquestionably refer to an Eastern origin of the nation.

Respecting experiments in Photography, the London Literary Gazette says "the preparation of albumenized glass plates promised much, and in some hands, as in those of Ross and Thomson of Edinburgh, and Langhenheim of Philadelphia,—the best results have been obtained. Essentially, their processes consist respectively of separating the fluid portion of the white of egg, and adding thereto a weak solution of the iodide of potassium. This is floated over a clean glass plate, so as to cover it with a very thin film, and carefully dried. When this is completed, the prepared surface is dipped into a solution of nitrate of silver, and thus an iodide of silver is formed on the surface. This iodide of silver being washed, as in the calotype process, with gallo-nitrate of silver, is very sensitive to the solar radiations, and being placed in the camera-obscura, is speedily impressed with a dormant image, which is developed by the deoxidizing action of gallic acid." A good steam gauge has long been a desideratum. All kinds of portable gauges are, either not to be depended upon, or subject to frequent repairs; so much so, that by law every steam-engine used in France is provided with a gauge on the barometer principle, that is 10 feet, 15 feet, 20 feet high for a steam pressure of 60 pounds, 90 pounds or 120 pounds to the square inch. Mr. Bourdon, chief engineer at the Creusot works, where the engines of the frigate Mogador, were built, has devised a gauge, which has obtained for him a medal at the London Fair, and is highly spoken of. It is based upon the fact, that a thin metal tube, coiled up and subjected to internal pressure, will tend to uncoil itself in proportion to the amount of the pressure. The tube used is first flattened preparatory to the coiling up, so as to render this operation more easy. One of the extremities communicates with the boiler, the other is pointed and turned up so as to serve as an index on a circular scale. The apparatus is fixed in a case, in the shape of a hair medallion, and closed with a glass. Experiment must show if the effects of temperature be insignificant compared with those of pressure, and if the internal working of metallic atoms will not in time make this gauge give wrong indications.—If the instrument can bear the test of practical use, it will soon supersede every other already known. The inventor has already been rewarded by a council medal at the London Exhibition, and the cross of the Legion of Honor in France. In the last named country, the Government has made provision to try it on all the railways.

Experiments have been made on the Paris and Lyons Railway for the application of electromagnetism to locomotives. The report goes on to say that the apparatus prepared for the purpose was applied to an exceedingly large locomotive, and succeeded perfectly, first on a level, and then on an ascent of thirteen millièmes, the steepest in fact of the line. It was feared that difficulties would arise from the smoothness of the wheels on the rails,—but no inconvenience was perceptible from that circumstance.

Lord Brougham has been passing a few weeks in Paris, and the papers dwell upon the marvellous preservation of his powers, which seem to baffle the attacks of time. Galignani says he "read at the Academy of Sciences, before a most crowded auditory, a paper on the optical and mathematical inquiries which have occupied his time during his late residence at Cannes. His lordship accompanied the reading of this memoir with numerous demonstrations on the board, and for upwards of an hour captivated the attention of his hearers. MM. Arago, Biot, Ténard, and other eminent scientific men were present, and appeared deeply interested in the explanations of their learned confrére. His lordship spoke the whole time with great animation, and his numerous friends present were delighted to perceive that he was in such excellent health."

Mr. Isaac Lea, of Philadelphia, since his retirement from the house of Lea & Blanchard, is devoting himself more assiduously than before, to those scientific pursuits in which he has attained to such well-deserved eminence. The London Athenæum has the following notice of his most recent publication:—

"Observations on the Genus Unio, &c. Vol. IV: by Isaac Lea. It is pleasant, amidst all the material activity of the United States, to find ourselves ever and anon called on to bear testimony to the love of nature, truth, and beauty which there developes itself. In Mr. Lea's book we have descriptions and drawings of shells, originally published in the 'Transactions of the American Philosophical Society,' which would have done honor to any of the scientific societies of Europe. Such works can be of interest only to the professed conchologist; but in his hands they become treasuries of facts by which he works out the great laws of morphology regulating the animal forms that he more particularly studies. The shells described in this volume are for the most part American, and from fresh water; and indicate how large a field for natural history inquiry the vast continent of America still presents."

Mr. George Catlin, the well-known American traveller, has brought forward in London a plan for a Museum of Mankind, "to contain and perpetuate the familiar looks, the manufactures, history, and records of all the vanishing races of man." A report on the subject was read by him at one of the scientific societies; and on the 9th of January he delivered an address on the subject at his American-Indian Collection. He opened by a general review of his past labors in the study of the native tribes of America, illustrated by a reference to some of the numerous records he has collected, and by the appearance of various natives themselves in full costume. He then proceeded to enforce the comprehensive scheme which now occupies him. After pointing out the urgent necessity of at once engaging in the formation of a museum of the kind proposed by him, if it is to be gathered together at all—for the in-roads of civilization are rapidly extirpating the native races of the world—he went on to develope his plan in its practical details. He proposes, as the first step, the purchase and fitting-up of a steamer "as a floating museum," in which the seaport towns of all countries should be visited; considering that this mode of exhibition would possess great advantages through "the facility of its visiting the chief cities of the world, stopping no longer in any than a lucrative excitement could be kept up;" and in the great immediate saving of time, as well as in other respects. Mr. Catlin's present collection would form the basis of such a museum. Mr. Catlin defines the word "mankind," for his purpose, as meaning no more than the expiring members of the great human family—the Red Indian, the native Australian, the Greenlander, the Peruvian,—and so forth. Measures, no doubt, might be taken for obtaining and preserving such memorials as exist of these and similar races; and it is a reflection on the governments of England and of the United States that they have hitherto remained so indifferent in the matter,—that being severally custodians of certain interesting and rapidly obliterating pages of the book of human history, they should suffer the final extinction of the record to take place before their eyes without any attempt to preserve its lessons for futurity.

Majendie, Louis and Londe—appointed by the French Academy of Medicine to examine a work by Dr. James Gillkrest, entitled, Is Yellow Fever contagious or not? have made a report in which they speak highly of the industry and skill displayed by Dr. Gillkrest, and adopt the conclusion at which he arrives with regard to the non-contagiousness of this disease. "The author," say they, establishes by numerous well-selected and incontrovertible proofs that yellow fever is not contagious under any circumstances,—not even in the case of crowding in this disease, whether of the dead or of the living; that the removal of the individuals from the influence of the local causes which produce this affection is the fittest means of preventing its extension; and, lastly, that the cordons called "sanitary and quarantine measures, far from arresting yellow fever, on the contrary favor its extension by combining the population within the influence of the local causes which give it birth." It may be hoped that with valuable testimony like this before them, governments will lose no time in abandoning oppressive quarantine regulations, at least as far as yellow fever is concerned.

From Holland, we hear that the dissolution of the Royal Institute of the Netherlands, which was ordered by royal decree to take place on the 1st of this month, has caused great dissatisfaction in the literary and scientific circles, and has called forth a rather indignant remonstrance from the Dutch Literary Association. The Institute held its last meeting on the 15th December; and it drew up a series of resolutions, expressing, in dignified terms, its sense of the injustice done it, and declaring that its dissolution will be "a heavy blow and a great discouragement" to Dutch science. The want of funds is the pretext put forth by the government for breaking up the learned body.

The Society of Antiquaries of Copenhagen is about to publish an Archæological Atlas of the North, accompanied by explanatory matter in French and Danish. It will be a valuable addition to the memoirs, papers, and documents, already published by the Society. This scientific association is one of the most important in Northern Europe, and its members include many of the most distinguished savans of Germany, Sweden, Norway, and Denmark. It possesses an excellent library, which contains, amongst other things of great value, about 2000 Icelandic manuscripts, very ancient, and written in the old Scandinavian tongue.