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 witli the Localities in which they occur, &c. price Three Shillings Coloured, or 

 Two Siiilliiigs Plain. A l"a>eiculus will appear regularly on the first day of every month. 



*2. The Work will extentl to 'Lweiity-five Numbers, containing in all One Hundred Plates. The Species will 

 be systematically arranged, agreeably lo the classillctition of Lamarck, with the recently ibnned Genera of Deshayes, 

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



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

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



XL 



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, Sec. 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 Reprcseritations 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. Lizars, so that the Work will apjioar with the utmost regularity. 



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

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

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



III. 



In the Press, and Speedily •u.-ill 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 

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



IV. 

 THE AjMERICAN ORNITHOLOGY 



Of ALEXANDER WILSON, and CHARLES LUCIAN IJONAPARTE, Prince of iMusiirnano, 

 with tlio a(Miti()n of all tiic newly discovorcMl Species, systeniuticaily Arranged ; and a Life of the 

 Author. By Captain Tiio.mas Brown, F.L..S., &c. 



1. 'J'his Work will appear in Monthly Numbers, each containing Six Coloured Plates, of a royal 4to. size, 

 accompanied by Twelve Pages of Letter-jjress. Price 'I'hree 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 Iwth male and female where a difiercnce exists in the jihimage of the sexes, 

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

 the Water liirds have been considerably enlarged. 



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

 celcbratetl artists. 



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

 Hi'NDRKn AND FiKiY BiiiDs. more than an eighth j)art of the origin.-d American edition, now out of print, which 

 was published at a sum exceeding £4U, anil is in the hands of very lew individuals in Great Britain. 



