VALUABLE WORKS OF REFERENCE.

CONDUCTED BY CHARLES KNIGHT.

In Six Volumes, price 3l., or bound in 3 Vols., half morocco, 3l. 12s.,

THE CYCLOPÆDIA OF BIOGRAPHY.

This Cyclopædia of Biography may, without presumption, be stated to be the best Biographical Dictionary extant; unequalled in any language for the universality of its range, its fullness, accuracy, and completeness. It possesses the new and important feature of giving notices of living persons, English and foreign, of contemporary celebrity. No work of a similar nature approaches the English Cyclopædia of Biography in cheapness.

In Four Volumes, price 2l. 2s., or bound in 2 Vols., half-morocco, 2l. 10s.,

THE CYCLOPÆDIA OF GEOGRAPHY.

The fullness and accuracy of its information renders the Cyclopædia of Geography a necessary manual for every library and newsroom; not presenting a dry catalogue of names and places, but furnishing ample and interesting details of the History, Statistics, and physical features of every country in the world, according to the most recent discoveries and investigations.

In Four Volumes, price 2l. 2s., or bound in 2 Vols., half-morocco, 2l. 10s.,

THE CYCLOPÆDIA OF NATURAL HISTORY.

This Cyclopædia, embracing the most interesting details of Natural History, presented in the most attractive form of scientific explanation, and illustrated with many hundreds of beautiful wood-engravings, will furnish a most desirable addition to every library. To the Medical Student the work is indispensable.

THE CYCLOPÆDIA OF ARTS AND SCIENCES

Is now in course of publication, in Monthly Parts, price 2s. 6d. each.—This Cyclopædia will be completed in Eight Volumes. Of these, Vols. I., II., III., IV., and V. are published, price 12s. each: Vol. VI. will be published in December: Vols. VII. and VIII. in 1861.

These Works, perhaps forming the most valuable and comprehensive Works of Reference in the language, published as a whole under the title of "The English Cyclopædia," are founded upon the valuable Copyright of the Penny Cyclopædia, which has always remained in the hands of Mr. Knight. The elaborate revisions, with the large additions, of the present work, have involved a new outlay for literary labour of not less than Seven Thousand Pounds, making the cost of literary production alone not far short of Fifty Thousand Pounds.

NATURE-PRINTED BRITISH FERNS AND SEA-WEEDS.

This day is published price 21. 2s. (completing the Work in 2 Vols., price 41. 4s.) Vol. II. of the

OCTAVO NATURE-PRINTED BRITISH FERNS.

Being Figures and Descriptions of the Species and Varieties of Ferns found in the United Kingdom.

BY THOMAS MOORE, F.L.S.

The Work contains 122 Plates and 500 pages of Letter-press. Royal 8vo, uniform with the "Nature-Printed British Sea-Weeds." ⁂ Either Volume may be had separately.

This day is published, price 21. 2s. (completing the work in 4 Vols., price 81. 8s.) Vol. IV. of the

NATURE-PRINTED BRITISH SEA-WEEDS.

A History accompanied by Figures and Dissections of the Algæ of the British Isles.

BY W. JOHNSTONE AND ALEXANDER CROALL.

CONTENTS:

VOLS. I & II

RHODOSPERMEÆ.—RED SEA-WEEDS.

Vol. I.—Series I. Desmiospermeæ. 90 Species. 70 Plates.

Vol. II.—Series II. Gongylospermeæ. 88 Species. 63 Plates. With Dissections of all the Species.

VOL. III

MELANOSPERMEÆ.—OLIVE SEA-WEEDS.

Series III. 95 Species. 52 Plates. With Dissections of all the Species.

VOL. IV.

CHLOROSPERMEÆ.—GREEN SEA-WEEDS.

Series IV. 102 Species. 25 Plates. With Dissections of all the Species.

Synoptical Tables of the Orders, Genera, and Species. General View of the Structure and uses of the Sea-Weed Family. Sketch of their Classification and Distribution. Instructions for the Cultivation of the Algæ, their preservation in the Herbarium, and their preparation as objects for the Microscope.

⁂ Either Volume may be had separately, price 2l. 2s. each.

NOTICES OF THE PRESS.

"This volume is well qualified to receive popular approval, but it has, beyond this, other recommendations. It is a first-class book, and it is a first-class scientific book as regards its execution.... As a scientific book, the authors have well done their part too; for they have given us a clear, correct, and comprehensive scientific account of the plants they have treated on, adding such popular information as the subject admitted of; and they have given us, in addition, well-executed magnified dissections of the parts essential for scientific study."—Illustrated London News.

"For this kind of work Nature-Printing is exactly adapted. Every delicate and inimitable ramification is most attractively and accurately represented. The fifty-six plates in this volume can scarcely be surpassed, and have not, as far as we know, been equalled.... We have found them pleasing, and still pleasing during several inspections. The volume is handsomely got up, and will make a very attractive drawing-room table-book at home or at the sea-side."—Athenæeum.

"The process by which it is produced is that delightful one which has been a labour of love to Mr. Henry Bradbury in bringing to perfection, and which was first applied to the Ferns. To speak of the accuracy of the plates is of course a misnomer. They are of the nature of photographs; and the only possible drawback to the work is, that its extreme beauty will banish to the drawing-room table, as a mere example of pretty drawing, what, as a scientific manual, has not been equalled.—Saturday Review.

"Mr. Henry Bradbury's 'Nature-Printed British Sea-Weeds' is now completed by the appearance of the fourth volume. The authors have added sketches of the history of British Sea-Weeds, of their geographical distribution, of their structure, and of their uses. There are also chapters on arranging Algæ for the Herbarium, on the families and genera, on the species, and on the bibliography of the subject, the whole concluding with a glossary of scientific terms, and a complete Index. The whole work now forms four volumes unsurpassed for beauty even in the rich field of Natural History."—Gardeners' Chronicle.