1907] Beebe: Geographic Variation in Birds. 39 



BIBLIOGRAPHY. 



Allen, J. A. 



1877 The Influence of Physical Conditions in the Genesis of Species. Radical 



Review, i, 1877. 

 1906 Annotated reprint of above. Ann. Rep. Smith, Insti., 1905. 



1905 The Evolution of Species through Climatic Conditions. Science, N. S., vol. 



xxii, No. 569. 



1906 Heredity and Subspecies. Ibid., N. S., vol. xxiii, No. 578. 

 Baird, Brewer and Ridgway. 



1874 North American Birds. Vol. iii. 

 Barrows, W. B. 



1884 Abnormal Coloration in a Caged Robin. The Auk, vol. i, p. 90. 



1885 Ibid., The Auk, vol. ii, p. 303. 



1885 Another Black Robin. The Auk, vol. ii, p. 303. 

 Beebe, C. William. 



1906 Owls of the Neartic Region. Eleventh Ann. Rep. N. Y. Zool. Soc. 

 Blanford, W. T. 



1888 Fauna of British India. Mammalia. 

 Brewster, Wm. 



1884 A Singular Specimen of the Black-and-White Creeper. The Auk, vol. i, pp. 

 190-192. 

 Brown, Arthur Erwin. 



1903 The Variations of Eutaenia in the Pacific Siibregion. Proc. Acad. Nat. Sci. 



Phil., March, 1903. 

 Butler, A. G. 



1896 Foreign Finches in Captivity. 



1897 Change of Plumage in the American Nonpareil Finch. The Zoologist, No. 673 . 

 1902 Letter in The Ibis, 8th Series, vol. viii. 



1904 Notes of Melanism and Albinism in Birds. The Avicultural Magazine, N. S., 



vol. ii. 

 1904 Melanism in Gouldian Finches. Ibid. 

 Chadbourne, a. p. 



1896 and 1897 Evidence Suggestive of the Occurrence of Individual Dichromatism in 

 Megascope asio. The Auk, vol. xiii, No. 1. 

 Chapman, Frank M. 



1892 Notes on Birds and Mammals Observed near Trinidad, Cuba. Bull. Amer. Mus. 

 Nat. His., vol. iv. 

 Cockerel, T. D. A. 



1906 The Evolution of Species through Climatic Conditions. Science, N. S., vol. 

 xxiii. No. 578. 

 Cory, Charles B. 



1889 Birds of the West Indies. 

 CouES, Elliot. 



1879 Melanism of Turdus migratorius. Bull. Nutt. Orn. Club, vol. iii. 

 Darwin, Charles. 



1868. Animals and Plants under Domestication. Second ed., vol. i. 

 Davenport, Charles B. 



1906 The Mutation Theory in Animal Evolution. Science, N. S., vol. xxiv, No. 618. 



