84. "Wright— Auk, Oct., 1909, p. 345. 



85. Auk, Oct., 1913, p. 604 (quoting Biggleston, Wilson 

 Bull., Vol. XXV, p. 49). 



86. Stanwood— Auk, Oct., 1910, p. 386. 



87. Stanwood— Auk, July, 1910, p. 291. 



88. Bluebird— Vol. VII, No. 4, p. 101. 



89. Stanwood — Nature and Culture, May, 1913 (vide Auk, 

 Oct., 1913, p. 613). 



90. Judson— Bird-Lore, Vol. XVII, No. 3, p. 213. 



91. Tyler— Auk, Vol. XXX, p. 395. 



92. Cole and Kirkpatrick — Ehode Island State College, 

 Exp. Station Bull. 162. 



93. N. Y. Evening Post, Nov. 6, 1915, "Penguins in Am. 

 Mus. Nat. Hist." 



94. Crandall, Lee S.— Bull. N. Y. Zool. Soc, Vol. XVIII, 

 No. 5, p. 1262. 



95. Job— Propagation of Wild Birds, 1915. 



96. Boulton— Bird-Lore, March-April, 1916, p. 123. 



97. Crandall, Lee S. — Personal communication. 



98. Nowotny— Auk, 1898, p. 30. 



99. Crandall— Bull. N. Y. Zool. Soc, Oct., 1909, p. 583. 



100. Beebe— Bull. N. Y. Zool. Soc, Jan., 1909, p. 466. 



101. Claus, Zoologie, Band ii, p. 34. 



102. Fiirbringer-Untersuch. zur Morph Vogel. 



103. Standard Encyclop., Vol. IX, p. 395. 



104. Wood — Am. Encyclop. Ophthalmology, Vol. IV, p. 

 2585. 



105. Knight — Birds of Maine (quoted by Burns (3) ). 



106. Thompson— Bird-Lore, Vol. V, p. 80. 



107. Beebe— Zoologica, Vol. I, p. 242. 



108. Kendrick, W. F. — Personal communication. 



109. Kendrick, W. F., and Bergtold, W. H. — Personal ob- 

 servation. 



110. IngersoU— Harper's Monthly, Vol. XCVI, p. 40. 



111. Eubincam, H- C. — Personal communication. 



112. Sutherland— Proc Zool. Soc, London, 1899, p. 787. 



113. Collins, E. W., and Bergtold, W. H.— Personal ob- 

 servation. 



114. Beebe— Bull. N. Y. Zool. Soc, July, 1904, p. 166. 



115. Pycraft— Encyclop. Brit., Edit. XI, Vol. 9, p. 14. 



116. Page — Aviaries and Aviary Life. 



117. Eenshaw — ^Aviculture Mag., Vol. 7, No. 3, p. 82. 



118. Heilmann-Dansk Ornith. Forening. Tidesk., March, 

 1915, p. 147. 



119. Hornaday — American Natural History. 



120. Pycraft — Infancy of Animals. 



121. Denbj^— Nature, Vol. LIX, p. 340. 



122. California Alligator Farm, Los Angeles — Personal 

 communication. 



107 



