108 THE OOLOGIST. 



Mr. FRANK H. LATTIN, 



Publisher the OOLOGISTS' HAND-BOOK, Albion, N Y. 



Sir: Herewith please find % for which send me by 



mail, post-paid copies of the OOLOGISTS' HAND-BOOK 



for 1891 bound in 



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Box, Street, or Co 



SPECIAL OFFER TO ADYANCE SUBSCRIBERS 



Until June 1st advance subscriptions, accompanied by the cash, 

 will be accepted as follows: 



Paper covers, 40c; 3 copies, $1.00. 

 Leather " 60c; 3 copies, $1.50. 

 Advance subscribers will receive their books by the first mail, 

 after we obtain them from the bindery. All orders will be filled in 

 rotation received. 



COUES' KEY TO 



NORTH AMERICAN 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 the United 

 States, including Greenland. 



The Fourth Edition, exhibiting the New Nomenclature of the American Ornitholo- 

 gists' Union, and including descriptions of additional species, changes, 

 etc., up to May I, 1800. 



"WITH "WHICH -A-RIE INCORPOHATED 



GENERAL ORNITHOLOGY.— An outline of the structure and classification of 



of Birds; and 

 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 three former editions 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 prepar- 

 ation of -'THE NEW KEY," in which the whole subject is carefully brought down to date. "Coues' 

 Key" is too well known as a leading and authoritive treatise to require remark. The work contains, 

 over 900 pages and is fully indexed with several thousand entries. 



ROYAL OCTAVO, VELLUM $7.50. SAMPLE PAGES FOE STAMP. 

 FRANK H. LATTIN, : : : ALBION, N. Y. 



