IMPORTANT WORKS ON NATURAL HISTORY. 



In the course of Pnblicutioii, 

 I. 



ILLUS'J^l^ATlONS OF THE FOSSIL CONCHOLOGY 



OK (;iu:at Britain and Ireland. 



BY CAPTAIN THOMAS BROWN, F.L.S., &c. 



1. Encli Number will contain Four Coloured Plates, engraved on Steel by the first Artists, with Four Pages of 

 Descriptive Letter-press ; together with the Localities in which they occur, 8:c. price Three Shillings Coloured, or 

 Two Sliillinfrs Pinin. A Fasciculus will appear regularly on the first day of every month. 



•J. The Work will extend to Twenty-five Numbers, containing in all One Hundred Plates. The Species will 

 be systematically arranged, agreeably to the classification of Lamarck, widi the recently formed Genera of Deshayes, 

 Sowerby, Parkinson, &c. introduced into their respective places. Every Number will comprise at least Forty Shells. 



.'3. At the end of the Work will appear a Stratigraphical Index, on an entirely new plan, exhibiting at one view 

 the whole British Species of Fossil Shells, with their Geological positions. 



II. 



ILLUSTRATIONS OF THE CONCHOLOGY 

 OF GREAT RRFrAlN AND IRELAND. 



BY CAPTAIN THOMAS BROWN, F.L.S., &c. 



SECOND EDITION, WITH ADDITIONS. 



L Each Number will contain Four Coloured Plates, with complete Descriptions, Localities, &c. A Fasciculus 

 will appear regularly every month. Price Three Shillings Coloured, or- Two Shillings Plain. 



2. The \Vork will extend to Fifteen Numbers, containing in all Fifty-eight Plates, with about Twelve Hundred 

 Figures of Shells, being Representations of ALL the Species discovered up to the present time, including Marine, 

 Land, and Fresh Water; together with Illustrations of the Animals of nearly the whole Genera. The Plates are all 

 already engraved by Mn W. H. Lizaus, so that the Work will appear with the utmost regularity. 

 •^* 3. This is the only Work which contains Representations of ALL the Species, and is the only British Concho- 

 logy in which the Ani.mals have been introduced, and is sold at a price not a third of others which do not contain a 

 half of the Species, while the Engravings are executed in a much higher style of art. 



III. 



/// the Press, and Speedily will Appear, 



THE ELEMENTS OF FOSSIL CONCHOLOGY, 



Illustrated by Figures, engraved on Steel, of ALL the known Genera; with their Generic Characters, and a 

 complete Description of their application to the elucidation of the various Geological periods. By Captain Thomas 

 Brown, F.L.S., &c. Royal 18mo. 



IV. 

 THE AMERICAN ORNITHOLOGY 



Of ALEXANDER WILSON, and CHARLES LUCIAN BONAPARTE, Prince of Musignano, 

 with tiie addition of all the newly discovered Species, systematically Arranged ; and a Life of the 

 Author. By Cai'Tain Thomas Buown, F.L.S., &c. 



\. This ^\'ork will appear in Monthly Numbers, each containing Six Coloured Plates, of a royal 4to. size, 

 accompanied by Twelve Pages of Letter-press. Price Three Shillings and Sixjience. 



2. The \\'ork will extend to Thirty-one Numbers, and will form, when complete, two handsome royal 4to. 

 volumes, with One Hundred and Kiglity-six Plates. The whole of the I^and Birds the dimensions of a pigeon and 

 under are the size of nature, and exhibit l)oth male and female where a dilference exists in the j)lumage of the sexes, 

 and in some cases the young, and are all at least the sizes of those of the justly celebrated original work; and many of 

 the Water Birds have been considerably enlarged. 



n. Nearly the whole Plates are already engraved, by Lizars, Scott, Mitchell, Miller, Milne, Harvey, and other 

 celebrated artists. 



4. This \\'ork, when completed, will not have cost the subscribers, even with the addition of upwards of One 

 HrNnnED and Fifty Birds, more than an eighth part of the original American edition, now out of print, which 

 was p\ihlishcd at a sum exceeding £40, and is jn the hands of very few individuals in Great Britain. 



