LITERATURE 277 



207 Warren, H. C. : Numerical Effects of Natural Selection Acting 



Upon Mendelian Characters. Genetics, 1917, ii, 305-312. 



208 Weinstein, a. : Coincidence of Crossing Over in Drosophila mel- 



anogaster [ampelophila) . Genetics, 1918, iii, 135-159. 



209 Weismann, a. The Evolution Theory. (Trans. J. A. Thomson 



and M. R. Thomson.) London, 1904, 2 vol. 



210 Wellington, R. : Influence of Crossing in Increasing the Yield of 



the Tomato. New York Agr. Exp. Sta. Bull. 34G, 1912, 57-76. 



21 1 Wentworth, E. N. : The Segi^egation of Fecundity Factors in 



Drosophila. Jour. Gen., 1913, iii, 113-120. 



212 Wentworth, E. N., and Aubel, C. E. : Inheritance of Fertility in 



Swine. Jour. Agr. Bes., 1916, v, 1145-1160. 



21 3 Wentworth, E. N., and Remick, B. L. : Some Breeding Properties 



of the Generalized Mendelian Population. Genetics, 1916, i, 608- 

 616. 



214 Westermarck, E. : The History of Human Marriage. 3rd Ed., 



London, 1903, pp. 644. 



215 Wheeler, W. M. : The Ants of the Baltic Amber. Schrlft. Phijsik- 



okonom. GeseU. Kordgsherg, 1914, Iv, pp. 142. 



216 Whitney, D. D. : Reinvigoration Produced by Cross-fertilization in 



Hydatina senta. Jour. Exp. Zool., 1912, xii, 337-362. 



217 Whitney, D. D. : " Strains " in Hydatina. Biol. Bull., 1912, xxii, 



205^218. 



218 Whitney, D. D. : Weak Parthenogenetic Races of Hydatina senta 



Subjected to a Varied Environment. Biol. Bull., 1912, xxiii, 321- 



330. 



219 WiEGMANN, A. F. : Ueber die Bastarderzeugung im Pllanzenreich. 



Braunschweig, 1828, pp. 40. 



220 Withington, C. F. : Consanguineous Marriagas : Their Effect upon 



Offspring. Mass. Med. Soc, 1885, xiii, 453-484. 



221 Wolfe, T. K.; Further Evidence of tlie Immediate Effect of Cross- 



ing Varieties of Corn on the Size of the Seed Produced. Jour. 

 Amer. Soc. Agr., 1915, vii, 265-272. 



222 Woodruff, L. L.: Two Thousand Generations of Paramecium. 



Arch. f. Protistenkunde, 1911, xxi, 263-266. 



223 Woods, F. A. : Heredity in Royalty. New York, 1906, pp. 312. 



224 Woods, F. A.: The Influence of Monarchs. New Y^ork, 1013, 



pp. 421. T T^ r 



225 Wright, S.: The Effects of Inbreeding on Guinea-pigs. T. Dei>lino 



in Vigor. II. Differentiation among Inbred Families. III. Crosses 

 between Different Highly Inbred Families. (Doctor Wright kindly 

 pemiitted the authors to read these valuable unpublished papers 

 in manuscript. ) 



