THE OOLOGIST. 167 



AT THE GREAT 



International Fair 



—TO BE HELL) AT— 



r>ETROIT, MICHIGAN, 



Aug. 26 to Sept. 5, 1890 



Frank H. Lattin will have a "carload" of Birds' Eggs, Sea Shells, 

 Corals, Natural History Specimens and Cnrio&ities of all kinds. 



Duplicate Specimeiis will be sold at surprisingly low prices. 



"Lattin" will personally attend the Exhibit during the Fair and 

 would be pleased to meet any of his patrors. Should you visit the 

 Fair, do not fail to visit Lattin's Exhibit, which you will £nd on the 

 second flo3r, at the south end of the M; i i Fuilding (sime location as 

 in '89.) The Exhibit will occupy 500 ft. floor sj a se with 50 ft. front. 



OOUES' KEY TO 



NORTH AMERICAN BIRDS, 



Contains a concise accotmt of every species of living a7id fossil Bird at present 

 known on the Continent north (yf 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, i8go 



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. p.. Ph. D., Member of the National 

 Academy of Science, &c. 



PROFUSELY ILLUSTRATED. 



. Tlip three former editions of this Standard Text Book of Ornitliolopy being entirely out of print, 

 and still verv muuli in denoand, the publishers have spttred Deithei- pains nor expense in the prepar- 

 ation of 'THK NPW KEY," In which the whole subject Is carefully I lought down to date. "Coues' 

 Key" Is too well known as a leading and authorKlve treatise to require )-einark. The wMk contains 

 over 900 pages and Is fully indexed with several ihou^and entries. 



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

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



