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 Rhode 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. BuU. N. Y. Zool. Soc., Vol. XVHI, 

 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. Fiirb ringer- 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. Ingersoll Harper's Monthly, Vol. XCVE, p. 40. 



111. Rubincam, 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. Renshaw 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. Denby -Nature, "Vol. LIX, p. 340. 



122. California Alligator Farm, Los Angeles Personal 

 communication. 



107 



