On the 2nd of October will be published, PART I. price 2s. 6d. of

BY THOMAS BELL, F.R.S.

PROFESSOR OF ZOOLOGY IN KING'S COLLEGE.

IN pursuance of the plan already commenced by the publication of the HISTORY OF BRITISH FISHES and of BRITISH QUADRUPEDS, it is intended that the latter work, now nearly finished, shall be immediately succeeded by a HISTORY OF BRITISH REPTILES, by the same author; which, with the former works, and that of Mr. Yarrell on BRITISH BIRDS, will complete the Natural History of the Vertebrate Animals of the British Islands.

The Reptiles of this country, although few in number, are not devoid of considerable interest; their habits are popularly much misunderstood, and several innocent and useful species are shunned and destroyed, from a mistaken notion that they are directly or indirectly noxious to man. The elucidation of their habits, the distinctive description of the species, their geographical distribution, and the history of the transformation of all the amphibious forms, are amongst the subjects which will be fully discussed.

The Illustrations, which will be in the first style of the art of wood-engraving, will be numerous; and in addition to a figure of each species, and of some of the most important varieties, will comprise many illustrations of structure and development, and transformation.

A few copies will also be printed in royal 8vo, price 5s. each Part, and fifty only on imperial 8vo; the latter not to be delivered until the volume is complete.

JOHN VAN VOORST, 1, PATERNOSTER ROW.

On the 1st of August will be published, in 1 vol. 8vo, price 28s.

A HISTORY OF BRITISH QUADRUPEDS;

BY THOMAS BELL, F.R.S.

PROFESSOR OF ZOOLOGY IN KING'S COLlege.

ILLUSTRATED by Figures engraved in the very best manner, on wood, of every British Animal, together with many illustrative vignettes, from drawings made under the immediate superintendance of the author.

"Reflects the greatest credit on its author, from the manner in which it is gotten up, the purity and elegance of the style, and the clearness and beauty of the wood-engravings. We are glad to see such a work, one which may be considered of national importance, emanating from the pen of a gentleman so fully capable of doing justice to a subject of such great interest, not only to the medical world, but to the public in general."-Dublin Journal of Medical Science.

"It speaks for itself, and in a tone which must command success: in design it is excellent; in execution, unexceptionable. The combination of the scientific and the popular, of the instructive and the amusing, justify the most confident expectations that the work will, when completed, be every way worthy of the reputation of the author and the patronage of the public. In a word, this work, and that of which it is the proper pendant, Yarrell,' may be considered rivals in excellency and beauty; every British library should, and we have little doubt will, possess both."-Morning Post.

A few copies are also printed in royal 8vo, price 21. 16s. and a very limited number in imperial 8vo, price 4l. 4s. for which early application will be necessary.