538 BULLETIN 17 9, UNITED STATES NATIONAL MUSEUM 



WiLUAMS, Robert White. 



1928. Further uotes on the birds of Leon County, Florida. — Fourth Supple- 

 ment. Auk, vol. 45, pp. 164-169. 

 Wilson, Alexander. 



1810. American ornithology, vol. 2. 



1831. American ornithology, vol. 2. 

 Wilson, Charles E. 



1923. Insect pests of cotton in St. Croix and means of combating them. 



Virgin Lslands Agr. Exper. Stat. Bull 3. 

 WiNGE, Herluf. 



1898. Gr0nlands Fugle. 

 WiTHERBY, Harry Forbes, et al. 



1920. A practical handbook of British birds. Vol. 1. (New ed., 1938.) 

 Wood, Harold Bacon. 



1937a. The growth of young barn swallows. Bird-Banding, vol. 8, pp. 



31-34. 

 1937b. Observations at a barn swallow's nest. Wilson Bull., vol. 49, pp. 

 96-100. 

 Wright, Axbert Hazen, and Harper, Francis. 



1913. A biological reconnaissance of Okefinokee Swamp: The birds. Auk, 

 vol. 30, pp. 477-505. 

 Wright, Horace Winslow. 



1912. Morning awakening and even-song. Auk, vol. 29, pp. 307-327. 

 Wright, William Sherman. 



1924. A unique swallow's nest. Condor, vol. 26, pp. 153-154. 

 Yarrell, William. 



1876-1882. A history of British Birds, ed. 4. Vol. 2. 



YOUNGWORTH, WiLUAM. 



1937. Terrestrial feeding kingbirds. Wilson Bull., vol. 49, p. 117. 

 Ziegler, George Frederick, Jr. 



1923. Notes on a purple martin colony. Auk, vol. 40, pp. 431— i36 



