108 THE OOLOGIST. 



Mr. FRANK H. LA TTIN, 



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



Sir: Hereivith please find $ for Schick send me by 



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



for 1891 bound in 



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SPECIAL OFFER TO ADVANCE SUBSCRIBERS 



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

 wiU 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 w^e obtain them from the bindery. All ordei-s will be filled in 

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COUES' KEV TO 



NORTH AMERICAN BIRDS, 



Contains a concise account of every species of living and fossil Bird at present 

 knotvn on the Continent north of the boundary line between Mexico and tJie 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, i8oo. 

 V^riTKC ■WHICH A.-R-E: HSrCOE.FOIiA.TElD 



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

 of Birds; and 



FIELD ORNITHOLOGY. — A nnanual 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. 



Tlie three former editions of this Standard Text Reck of Ornltliolopy being entirely out of print, 

 and still very much In demand, the puhllKhers have spared neither paiiiS nor expense in Ihe prepar- 

 ation of -'THE NEW KEY," In wlilcli the whole subject Is carefully I roupht down to date, "roues' 

 Key" Is too well known as a leading and authorUlve treatise to rtcjulre icmark. The work contains 

 over 9U0 pages and Is fully Indexed with several thousand entries. 



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

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



