IMPORTANT WORKS ON NATURAL HISTORY. 



lu the course of Publicalioti, 

 I. 



ILl.rsTKATIONS OF THE FOSSIL CONCHOLOGY 

 OF CiHKA^^ BRITAIN AND IRELAND. 



BY CAPTAIN THOMAS I5U0WN, F.L.S., &c 



I. Ilach Number will contain Four Colouretl Plates, engraved on Steel by the first Artists, with Four Pages of 

 Descriptive Lettir-press ; togetiicr with the Localitiis in wliicii thev occur, &c. jirice Three Shillings Coloured, or 

 Two Shillings Plain. A Fasciculus will appear regularly on the lirM day of every month. 



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

 Ik' sv.stemaiicallv arranged, agreeahlv to the classification of Lamarck, with the recently formed Genera of Deshayes, 

 St>w"erbv, ParkiiiMtn. Jvc. intriHluceci into their respective places. Every Ninnber will comprise at least Forty Shells. 



3. '.\t the end of the Work will appear a Straligraphical Index, on an entirely new plan, exliibiting at one view 

 the whole Hritish Species of Fossil Shells, with their CJeoiogical positions. 



11. 



ILLUSTRATIONS OF THE CONCHOLOGY 

 OF GREAT BRITAIN AND IRELAND. 



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



SECOND EDITION, WITH ADDITIONS. 



1. 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. Tlie 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 A\'ater : together with Illustrations of the Animals of marly 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- 

 logj- in which the Am.mai-s have been introduced, and is sold at a price not a third of others which do not contain a 

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



III. 



In the Press, and Speedily "icill Apjjcar, 



THE ELEMENTS OF FOSSIL CONCHOLOGY, 



Illustrated by Figures, engravetl 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 pcrioils. By Cai'Tain Thomas 

 BnowN, I'.L..*^., &c. Roval 18mo. 



IV. 

 THE AMERICAN ORNITHOLOGY 



OfALKXAXDKIl WILSON, a.t.l CII.VRLES LUCIAN BONAPARTE, Prince of Musiirnano, 

 with the addition of ajl tho newly discovered Sjjecies, systematically Arranged j and a Life of the 

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



\. This Work will appear in Monthly Numljers, each containing Six Coloured Plates, of a royal 4to. size, 

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



2. Tlie Work will extend to Thirty-one Numbers, and will form, when complete, two handsome royal 4to. 

 vohimes with One Hundred and Eighty-six Plates. The whole of the Land Birtls the dimensions of a pigeon and 

 under arc the si/e of nature, and exhibit Ixith male and female where a dill'erence exists in the plumage of the sexes, 

 and in some c;ls4s the young, and arc all at leiust the sizes of those of the justly celebrated original work; and many of 

 the Wati-r Birds have Ik-cu considerably enlargeil. 



:). Nearly the whole Plates arc nlremly engraved, by Lizars, Scoit, Mitchell, Miller, ISIilne, Harvey, and other 

 celebrated nrtist-s. 



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

 IltNDKF.i) AND FiKTV Bmu)s. niorc than an eighth j)art of the «)riginal American edition, now out of print, which 

 was publisJifd at a sum exceeding £40, and is in the hands of very lew individuals in Great Britain. 



