THE OOLOGIST. 



THE NEW KEY TO 



North. Axxierican Birds, 



Contains a concise account of every species of living and Fossil Bird at present known on the Continent 

 north of the boundary line between Mexico and theXlnited States, including Greenland. 



SECOND EDITION, REVISED TO DATE AND ENTIRELY REWRITTEN, 



WITH WHICH ARE INCORPORATED 



GENERAL ORNITHOLOGY- 

 cation of birds ; and 



-An outline of the structure and classifi- 



FIELD ORNITHOLOGY— A manual of collecting, preparing and 

 preserving birds. 



By ELLIOTT COUES, M. A., M. D., Ph. D., Member of the National Academy of Science, &c. 

 PROFUSELY ILLUSTRATED. The original edition of this Standard Text Book of Ornithology being 

 entirely out of print, and still very much in demand, the publishers have spared neither pains nor expense 

 in the preparation of " THE NEW KEY," in which the whole subject is carefully brought down to date. 

 Cone's " Key is to well known as a leading and authorative treatise to require remark, having for twelve 

 years held its place as the standard work of Reference for Professional ornithologist, as well as for students 

 and amateurs. For complete prospectus of this work see Young Oologist Vol, I., No. i, page 12. The 

 work is fully indexed with several thousand entries. Price complete in one stout volume. 



Koyal Octavo, Vellum Cloth, $10. Eoyal Octavo, Library Sheep, $1].50. 



Eoyal Octavo, Half Morocco, Extra, $13.50. 



FRANK H. LATTIN. Albion, N. Y. 



OUR THIRTY-TWO PAGE 



ILLUSTRATED CATALOGUE, 



CONTAINS COMPLETE I'RICE LIST OF 



Minerals, BiMs' Eggs, Shells. Curiosities. 



Naturalists', Taxidermists', Entomol- 

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