54 BIBLIOGRAPHY. 
MacDoweE tt, E. C. 
1915. Bristle inheritance in Drosophila. I. Extra bristles. Jour. Exper. Zool., 19. 
1916. Piebald rats and multiple factors. Amer. Nat., 50. 
1917. Bristle inheritance in Drosophila. II. Selection. Jour. Exper. Zool., 23. 
Marsnat., W. W., and H. J. Muturr. 
1917. The effect of long-continued heterozygosis on a variable character in Droso- 
phila. Jour. Exper. Zool., 22. 
Mipp.tetoy, A. R. 
1915. Heritable variations and the results of selection in the fission rate of Stylonychia 
pustulata. Jour. Exper. Zool., 19. 
Moreay, T. H., A. H. Sturtevant, H. J. Muwuer, and C. B. Bripazs. 
1915. The mechanism of Mendelian heredity. New York. 
Muiter, H. J. 
1914a. The bearing of the selection experiments of Castle and Phillips on the variability 
of genes. Amer. Nat., 48. 
1914b. A gene for the fourth chromosome of Drosophila. Jour. Exper. Zool., 17. 
1916. The mechanism of crossing over. Amer. Nat., 50. 
1917. An Oenothera-like case in Drosophila. Proc. Nat. Acad. Sci., 3. 
Pearson, K. 
1911. On the probability that two independent distributions of frequency are really 
samples from the same population. Biometrika, 8. 
Sprrtuman, W. J. 
1907. Inheritance of the belt in Hampshire swine. Science, n. s., 26. 
Sturtevant, A. H. 
1912. A critical examination of recent studies on color inheritance in horses. Journ. 
Genet., 2. 
