BY THOMAS BELL, F.R.S., F.Z.S.

PROFESSOR OF ZOOLOGY, IN KING'S COLLEGE, LONDON.

IN announcing the publication of a History of the Crustaceous Animals of the British Islands, it can scarcely be necessary to insist upon the interest which, in almost every point of view, attaches to them, or to seek far for ample grounds for the undertaking. It is not merely for the purpose of filling up a hiatus in the British Fauna, or as a medium for the publication of accurate figures and descriptions of the species, that the work is now projected. The form and structure, the physiology and habits, of these animals, are all as replete with interest as those of almost any group of the animal kingdom; and there are certainly few respecting which so little is popularly known. Amongst other points in their history, the long-disputed question of their metamorphosis will be thoroughly investigated, and some novel information on the phenomenon of the shedding of their crustaceous integument, will also be given; for which purpose the Author has had most liberally and kindly placed in his hands the whole of the observations and experiments of Mr. Couch, of Polperro, whose attention has for several years been directed to the elucidation of this curious subject. He has also received the promise of contributions from many distinguished naturalists, whose names will give a value to the work which it could not otherwise have possessed. The figures will be drawn by Mr. Westwood.

To be published in Parts. Price 2s. 6d. each, and completed in one vol. A few copies will be printed on larger paper, to correspond with the Quadrupeds and Reptiles, by the same Author, and the other Zoological Works of the same Publisher.

JOHN VAN VOORST, 1, PATERNOSTER ROW.

A GEOGRAPHICAL AND COMPARATIVE LIST OF

THE BIRDS OF EUROPE AND NORTH AMERICA.

BY CHARLES LUCIAN BONAPARTE,

PRINCE OF MUSIGNANO.

8vo, 5s. cloth.

CATTERMOLE'S ILLUSTRATED EDITION OF

DR. AIKIN'S CALENDAR OF NATURE;

OR,

NATURAL HISTORY OF EACH MONTH OF THE YEAR;

WITH A FEW ADDITIONS TO THE TEXT, BY A FELLOW OF THE LINNEAN AND ZOOLOGICAL SOCIETIES.

"Ornamented with eighteen designs, from the accomplished pencil of Mr. CATTERMOLE," twelve illustrative of the peculiar characteristics of the months, and six tail-pieces.

Price 2s. 6d. cloth lettered.

66 CATTERMOLE'S ILLUSTRATED EDITION" SHOULD BE PARTICULARLY EXPRESSED IN ORDERING THIS LITTLE VOLUME.

THE ECONOMY OF HUMAN LIFE;

IN TWELVE BOOKS. BY DODSLEY.

CABINET EDITION, WITH TWELVE BEAUTIFUL PLATES, ENGRAVED ON STEEL, FROM ORIGINAL DESIGNS, BY FRANK HOWARD, HARVEY, WILLIAMS, &c. NEATLY DONE UP, WITH GILT EDGES.

Price 5s. cloth.

BY THOMAS RYMER JONES, F.Z.S.

PROFESSOR OF COMPARATIVE ANATOMY, IN KING'S COLLEGE, LONDON.

THIS work is intended to comprise a general view of the Animal Creation, exhibiting the structure and internal economy of every class of living beings, and their adaptation to the circumstances in which they are severally destined to exist.

Five parts, containing one hundred and six illustrations, are now published, and the sixth and following parts will be published on alternate months, until complete in fifteen, at 2s. 6d. each; the whole will then form a manual of comparative anatomy and animal physiology, equally adapted to the man of letters, the zoologist, or the anatomical student. In order to render the work as intelligible as possible to unscientific readers, a glossary of technical and scientific terms will be given in the concluding part. About three hundred illustrations will be

embodied in illustration of the text.

"We may sincerely say, that the contents of the second part of this work have tended to augment, rather than diminish, the highly favourable impression which a perusal of the preceding number led us to form of the author's qualifications for ably carrying into effect the object set forth in his prospectus: whilst an evident familiarity with the recorded labours of naturalists, both at home and abroad, has rendered him conversant with the condition of zoological science up to the latest period, there are abundant indications of considerable personal research, united with the most accurate and careful observation."— Magazine of Natural History, New Series, November.

To accommodate the possessors of the large paper copies of the other works on Natural History issued by the same Publisher, a few copies of this work will be printed to correspond.

In Preparation,

A HISTORY OF BRITISH FERNS.

BY EDWARD NEWMAN, F.L.S. &c.

Illustrated by wood-engravings of every species, name, and variety, drawn on the wood by the Author, and showing the figure of the frond, the fructification, and venation of each.

A FLORA OF SHROPSHIRE.

BY W. A. LEIGHTON, B.A., F.R.S.E., &c.

This work will comprise the flowering plants indigenous to the county, arranged on the Linnæan system, and will be completed in three Parts. Part I. 8vo, sewed, price 4s. Part II. is just ready.

A FLORA OF THE

NEIGHBOURHOOD OF REIGATE, SURREY.

CONTAINING THE FLOWERING PLANTS AND FERNS.

BY GEORGE LUXFORD, A.L.S., F.R.S.E.

12mo, with a map of the district, 5s. cloth.

Among the numerous and highly interesting fossils found in the London clay, none are more abundant than the remains of fruits and seeds, which, although found in such amazing quantities in the Isle of Sheppey, have hitherto received but little attention from geologists, and consequently present a wide field for inquiry and research.

For many years past the Author of the present work has made these interesting remains his peculiar study, and during this period there have passed through his hands more than 120,000 fruits and seeds, from which he has selected about 25,000 specimens. He proposes to publish figures and descriptions of as many of the species as can with certainty be determined, and, as a guarantee for the accuracy of the delineations, he considers it will be sufficient to announce that the whole of the drawings and engravings will be executed by MR. JAMES DE CARL SOWERBY.

In these beautiful remains of an extinct Flora, the minute and delicately-formed vegetable tissues are preserved in the most perfect manner; and it is part of the Author's plan to give numerous highly magnified illustrations of the anatomical structure as well as of the external form.

The work will be printed in royal 8vo, and completed in about five parts, each containing from fifteen to twenty copper-plates; many of the plates will contain from forty to fifty figures each.

JOHN VAN VOORST, 1, PATERNOSTER ROW.