165. Simpson Proc. Royal Soc. Edinburgh, Vol. XXXII, 

 part 1, No. 5, p. 19. 



166. Simpson Proc. Royal Soc. Edinburgh,, Vol. XXXII, 



gart 1, No. 11, p. 10. 

 impson and Galbraith Jour. Physiology, Vol. 33, 

 p. 225. 



168. Crisp, E. Proc. Brit. Soc. Adv. Sci., 1864 and 1865, 

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169. Wilbur, A. P., and Watts, E. A. Personal communi- 

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170. Post, K. C. Wilson Bull., Dec., 1916. p. 178. 



171. Wetmore, Alex. U. S. Dept. Agric. Farmers Bull., 

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172. Sherman, A. R. Wilson Bull., Dec.. 1916, p. 196. 



173. Spohn and Riddle Am. Jour. Physiology, Vol. XLI, 

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174. Buchanan Jour. Physiology (Cambridge), Vol. 

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175. Colo. Mus. Nat. Hist., F. C. Lincoln Personal com- 

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176. Evans Birds, 1898. 



177. Oberholser U. S. Nat. Mus. Bull. 86. 



178. Meyer Auk, 1916, p. 82. 



179. Hitchcock Bird-Lore, March-April, 1917, p. 79. 



180. Eaton Birds of New York. 



181. Lanning Wild Life in China, 1911. 



182. Colo. Mus. Nat. Hist, R. J. Niedrach Personal com- 

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183. Wilbur Youth's Companion, Feb. 22, 1917, p. 111. 



184. Day Bird-Lore. June, 1899, p. 78. 



185. Lucas Auk, Vol. IV, p. 2. 



186. Campbell Bird-Lore, Jan.-Feb., 1903, p. 5. 



187. Seton and Chapman Bird-Lore, Jan.-Feb., 1904, p. 1. 



188. Lemmon Bird-Lore, May- June, 1901, p. 108. 



189. Whitten Bird-Lore, May- June, 1902, p. 95. 



190. Lemmon Bird-Lore, May-June, 1904, p. 89. 



191. Campbell Bird-Lore, Jan.-Feb., 1903, p. 5. 



192. Jackson Bird-Lore, Nov.-Dec., 1903, p. 184. 



193. Moore Bird-Lore, Sept-Oct., 1902, p. 162. 



194. Hegner Bird-Lore, Sept.-Oct., 1906, p. 154. 



195. Shufeldt Auk, July, 1893, p. 304. 



196. Heil Bird-Lore, May-June, 1908, p. 101. 



197. Heil Bird-Lore, July-Aug., 1909, p. 158. 



ERRATA 



Pages 52 to 57, inclusive Read "Temperature" for "Weight" 



at heads of second columns. 



Page 100, line 9 Read"Falcunculus" for "Falcumculus." 



