650 A CENTURY OF PROGRESS IN THE NATURAL SCIENCES 



formation there is the recent and scholarly volume by Erwin Stresemann (1951), 

 which has provided the foundation for several sections of this chapter. The 

 debt to Professor Stresemann is gratefully acknowledged. The little volume by 

 Maurice Boubier (1925) was also useful, as were the chapters in Fifty Years' 

 Progress of American Ornithology, 1883-1933 published by the American Orni- 

 thologists' Union on its fiftieth anniversay. Casey Wood's (1931) survey of the 

 vertebrate literature and R. M. Strong's (1939-1946) bibliography were re- 

 peatedly consulted. 



To my colleague and friend, Dr. William Graf, I owe a debt of gratitude for 

 his patient and extensive help with the translation of large portions of Dr. 

 Stresemann 's book. 



LITERATURE CITED 



Allen, A. A. 



1914. The Red-winged Blackbird: A study in the ecology of a Cat-tail marsh. Proc. 

 Linn. Soc. New York, No. 24. 



Allen, J. A. 



1871. On the mammals and winter birds of East Florida, with an examination of 

 certain assumed specific characters in birds, and a sketch of the bird-fauna 

 of eastern North America. Bull. Mus. Comp. Zool., 2:161-450. 



1877. The influence of physical conditions in the genesis of species. Radical Review, 

 1:108-140; reprinted in Ann. Rept. Smithson. Inst., 1905:375-402. 



Altum, B. 



1868. Der Vogel und sein Leben. 240 pp. Munster. 



Ameghino, F. 



1891. Enumeracion de las aves fosiles de la Republica Argentina. Rev. Argentino 



Hist. Nat., 1:441-456. 

 1895. Sur les oiseaux fossiles de Patagonie. Bol. Inst. Geog. Argentino, 15:501-602. 



Armstrong, E. A. 



1947. Bird Display and Behaviour, iii + 431 pp. London: Lindsay Drummond. 



Baird, S. F. 



1859. Notes on a collection of birds made by Mr. John Xantus, at Cape San Lucas, 

 Lower California, and now in the museum of the Smithsonian Institution. 

 Proc. Acad. Nat. Sci. Phila., 11:299-306. 



Baird, S. F., T. M. Brewer, and R. Ridgway 



1874. A History of North American Birds. 3 vols. Boston: L. H. Brown and Co. 



Baird, S. F., J. Cassin, and G. N. Lawrence 



1858. Pacific Railroad Reports. Volume IX, Birds. Ivi + 1005 pp. Washington, D. C. 



Baker, E. C. S. 



1922-1930. The Fauna of British India, including Ceylon and Burma. (Birds.) 8 vols. 

 London: Taylor and Francis. 



Bannebman, D. a. 



1930-1951. The Birds of Tropical West Africa. 8 vols. London: Crown Agents for 

 Colonies. 



Bartsch, p. 



1903. Notes on the herons of the District of Columbia. Smithson. Misc. Coll., 45: 

 104-111. 



