IMPORTANT WORKS ON NATURAL HISTORY. 



In the course of Publication, 

 I. 



ILLUSTRATIONS 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, engraved on Steel by the first Artists, with Four Pages of 

 Descriptive Letter-press ; together with the Localities in which iIrv occur, &c. j>rice Three Shillings Coloured, or 

 Two Siiillings Plain. A Fasciculus will appear regularly on the first day of every month. 



2. 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, with the recently formed Genera of Deshayes, 

 Sowerhy, Parkinson, i>:c. introduceil into their respective places. Every Number will comprise at least Forty Shells. 



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

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



11. 



ILLUSTRATIONS OF THE CONCHOLOGY 

 OF GREAT BRITAIN 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 Two Shillings and Sixpence Coloured, or One Shilling and Sixpence 

 Plain. 



2. The Work 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 Mu W. H. Lizaiis, 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. 



In the Press, and Speedily will Appear, 



THE ELEMENTS OF FOSSIL CONCHOLOGY, 



lllustratcil by I'igures, 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. Roval 18mo. 



IV. 

 THE AMERICAN ORNITHOLOGY 



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

 with the addition of all tin? newly (liscovercd Sj)ecie.s, systematically Arranged ; and a Life of the 

 Autlior. By Captain Thomas Brown, F.L.S., &c. 



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

 accompanied by 'i'welve Pages of Letter-press. Price Three Shillings and Sixpence. 



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

 vohnnes, with One Ilundreil and Ijghty-six Plates. The whole of the Land Birds the dimensions of a pigeon and 

 inider are the size of nature, and exhibit both male and female where a dillerence exists in th(! plumage of the sexes, 

 and in sonu! 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 eidarged. 



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

 celebrated artists. 



4. This Work, when completed, will not have cost the subscril)crs, even with the addition of upwards of One 

 HiNDiiri) ANo FuTY limns, more than an eighth part of the original American editiim, now out of print, which 

 w:ls published at a sum excee<ling S.-W, and is in the hands of viry tew individuals in Great Britain. 



