4o8 ANIMAL AGGREGATIONS 



Williams, Roger J. 1919. The vitamine requirement of yeast : a simple bio- 

 logical test for vitamine. Jour. Biol. Chem. 38:465-86. 



Williams, S. R. 1920. Pedinella colony. Anat. Rec. 17:339-40. 



WiLLiSTON, S. 1908. Manual of North American Diptcra. 3d ed. New Haven: 

 Hathaway. 405 pp. 



WiLLMER, E. N. 1928. Tissue culture from the standpoint of general physiol- 

 ogy. Biol. Rev. 3:2^1-^02. 



Wilson, C. B. 1923. Water beetles and pond fish culture. U.S. Dept. Agric. 

 Bull. Bur. Fisheries 39:231-345. 



Wilson, H. V. 1910. Development of sponges from dissociated tissue cells. 

 Bull. U.S. Bur. Fish. 30:1-30. 



. 191 1. On the behavior of dissociated cells in hydroids, Alcyonaria and 



Aslerias. Jour. E.xp. Zool. 11:281-339. 



WissLER, Clark. 1930. The integration of the sexes — marriage. From Cow- 

 dry's Human Biology and Racial Welfare, chap, xii, pp. 266-91. New York: 

 Hoeber. 



Wolfe, H. S. 1926. The auximone question. Bot. Gaz. 81:228-31. 



Woodruff, L. L. 191 i. The effect of excretion products of Paramoecium on 

 its rate of reproduction. Jour. Exp. Zool. 10:551-81. 



. 191 2. Observations on the origin and sequence of the protozoan fauna 



of hay infusions. Ibid. 12:205-64. 



. 1914. The effect of excretion products of Infusoria on the same and 



on different species, with special reference to the protozoan sequence in 



infusions. Ibid. 14:575-82. 

 WooDWORTH, W. M. 1907. Tht^aXoXoviorm, Eunice viridis Gra,y. Bull. M us. 



Conip. Zool. Harvard 51:3-21. 

 Wright, A. H. 1911. Early records of the passenger pigeon. Auk 28:346-66, 



427-49. 

 Wright, G. P. 1926. Presence of a growth stimulating substance in the yolk 



of incubated hen's eggs. Proc. Soc. Exp. Biol, and Med. 23:603-5. 

 Wright, Howard W. 1909. An ornithological trip to Los Coronados Islands, 



Mexico. Condor 11:96-100. 

 . 1913. Birds of San Martin Island, Lower California. Ibid. 15:207- 



10. 

 Wylly, Mrs. 1889. Droves of lycaenid caterpillars herded by ants. Canadian 



Eniomol. 21:132-33. 

 Yerkes, R. M. 1916. Mental life of monkeys and apes. Behavior Mono. 



No. III. New York: Holt. 145 pp. 

 . 1903. The instincts, habits and reactions of the frog. Psych. Rev. 



Mono. Suppl. 4:579-97. 

 . 1905. The sense of hearing in frogs. Jour. Comp. Neur. and Psych. 



15 : 279-304. 



