IMPORTANT WORKS ON NATURAL HISTORY. 



In the course of Publication, 

 I. 



ILLUSTllATIONS OF THE FOSSIL CONCHOLOGY 

 OF GREAT BRITAIN AND IRELAND. 



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



1. Each Number will contain Four Coloured Plates, cn<»rave(l on Steel by the first Artists, with Four Pages of 

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

 Two Shillings Plain. A Fasciculus will appear regularly on the first day of every month. '; 



'2. Tiie 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, with the recently formed Genera of Dcshayes, J 

 Sowerby, Parkins<.)n, &c. introduceil into their n-spective 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 It 

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



II. 



ILLUSTRATIONS OF THE CONCHOLOGY 

 OF GREAT BRITAIN AND IRELAND. 



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



SECOND EDITION, WITH AUDITIONS. 



1. 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 Work will extend to Fifteen Numbei-s, containing in ail 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 (Jencra. The Plates are all 

 already engraved by Mu W. II. Lizaus, so that the ^^'ork will appear with the utmost regularity. 



3. This is the only \\'<)rk which contains Representations of ALL the Species, and is the only British Concho- 

 logj- in which the Animals have been introduced, and is sold at a price not a third of otliers which do not contain a 

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



HI. 



In the Press, and Specdifi/ •aill Appear, 



THE ELEMENTS OF FOSSIL CONCHOLOGY, 



Illustrated by Figures, engraved on Steel, of ALL tlie 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 the addition of all the newly discovered Species, systematically Arranged ; and a Life of the 

 Author. By Captain Thomas Buowx, F.L.S., &c. 



1. This Work will appear in Monthly Numbers, eacli containing Six Coloured Plates, of a royal 4to. size, 

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



2. The ^Vork will extend to Thirty-one Numbers, and will form, when complete, two handsome royal 4to. 

 volumes, with One Hundred and Eighty-six Plates. The whole of the Land Birds the dimensions of a pigeon and 

 under are the size of nature, and exhibit both male ami female win re a difl'erence exists in the plumage ot 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 liave been considerably enlarged. 



3. Nearly tlie whole Plates arc already engraved, by Lizars, Scott, Mitchell, Miller, Milne, Harvey, and other 

 celebrated artists. 



4. This Work, when tT)mplete<l, will not have cost the subscribers, even with the addition of upwards of One 

 Hundred and Fifty IJirds. more than an eighth part of the oricrinal American edition, now out of print, which 

 was published at a sum exceeding £40, and is in the hands of vcr\' few individuals in Great Britain. 



