JOHN E. THAYER COLLECTION 



GADOW, HANS. Through Southern Mexico; being 

 an account of the travels of a naturalist. By Hans 

 Gadow. With over 160 full-page and other illus. and 

 maps. London, Witherby & Co.; New York, Charles 

 Scribner's Sons, 1908. xvi, 527 pp. front., 160 full- 

 page and other illus. 



GAMBEL, WILLIAM. Remarks on the birds 

 observed in Upper California, with descriptions of new 

 species. By William Gambel. pp. 25-26. 2 col. pi. 

 33 cm " 



GATKE, HEINRICH. Heligoland as an ornitho- 

 logical observatory ; the result of fifty years' experience. 

 By Heinrich Gatke . . . tr. by R. Rosenstock . . . 

 Edinburgh, D. Douglas, 1895. x pp., n., 599 pp. 

 front., illus., port. 



GENTRY, THOMAS GEORGE. Life-histories of 

 the birds of eastern Pennsylvania. By Thomas G. 

 Gentry . . . Philadelphia. Pub. by the author, 1876- 

 77. 2 vols. 2o| cm- Vol. 2 has imprint: Salem, Mass., 

 The Naturalists' Agency, 1877. 



GENTRY, THOMAS GEORGE. Nests and eggs 

 of birds of the United States ... By Thomas G. 

 Gentry . . . Philadelphia, J. A. Wagenseller, 1882. 

 x, 300 pp. front, port., I. (i.e. 54) col. pi. 



GENTRY, THOMAS GEORGE. The House- 

 Sparrow at home and abroad, with some concluding 

 remarks upon its usefulness, and copious references to 

 the literature of the subject. By Thomas G. Gentry. 

 Philadelphia, Claxton, Remsen & Haffelinger. 1878. 

 l-vi, 128 pp. front. 23' 



GERARDIN, SfeBASTIEN. Tableau 61ementaire 

 d'ornithologie 1'histoire naturelle des oiseaux que Ton 



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