326 THE THEORY OF THE GENE 



1915. Localization of the hereditary material in the germ cells. Proc. 



Nat. Acad. Sc. I. 



1916. A critique of the theory of evolution. Princeton Press. 



1917. An examination of the so-called process of contamination of 



the genes. Anat. Eec. XI. 



1917. The theory of the gene. Amer. Nat. LI. 



1918. Concerning the mutation theory. Sc. Mo. V. 



1918. Changes in factors through selection. Ibid. V. 



1918. Evolution by mutation. Ibid. VI. 



1919. A demonstration of genes modifying the character ' ' notch. ' ' 



Carnegie Inst. Wash. No. 218. 



1919. The physical basis of heredity. Philadelphia. 



— ■ 1922. The mechanism of heredity. Nature CIX, Feb. 23, Mar. 2, 

 Mar. 9. 



- 1922. On the mechanism of heredity. Croon ian Lecture. Proc. Roy. 

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- 1923. The modern theory of genetics and the problem of embryonic 

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- 1924. Human inheritance. Am. Nat. LVIII. 



Morgan, T. H., and Bridges, C. B. 1913. Dilution effects and bicolorism in 

 certain eye colors of Drosophila. Jour. Exp. Zool. XV. 



1916. Sex-linked inheritance in Drosophila. Carnegie Inst. Wash. No. 



237. 



1919. The construction of chromosome maps. Proc. Soc. Exp. Biol. 



and Med. XVI. 



1919. The origin of gynandromorphs. Carnegie Inst. Wash. No. 278. 



1919. The inheritance of a fluctuating character. Jour. Gen. Physiol. I. 



Morgan, T. H., and Cattell, E. 1912. Data for the study of sex-linked 



inheritance in Drosophila. Jour. Exp. Zool. XIII. 



1913. Additional data for the study of sex-linked inheritance in Droso- 

 phila. Ibid. XIV. 



Morgan, T. H., and Lynch, C J. 1912. The linkage of two factors in Droso- 

 phila that are not sex-linked. Biol. Bull. XXIII. 



Morgan, T. H., and Plough, H. II. 1915. The appearance of known muta- 

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Morgan, T. H.; Sttjrtevant, A. H. ; and Bridges, C. B. 1920. The evidence 

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Morgan, T. H.; Sturtevant, A. H.; Muller, H. J.; and Bridges, C. B. 

 1915. 2d ed. 1923. The mechanism of Mendelian heredity. Holt & Co. 



Muller, H. J. 1914. A factor for the fourth chromosome of Drosophila. 

 Science, n.s. XXXIX. 



1914. A gene for the fourth chromosome of Drosophila. Jour. Exp. 



Zool. XVII. 



1916. The mechanism of crossing over. Amer. Nat. L. 



1917. An Oenothera-like case in Drosophila. Proc. Nat. Acad. Sc. III. 



1918. Genetic variability, twin hybrids and constant hybrids, in a case 



of balanced lethal factors. Genetics. III. 



1920. Are the factors of heredity arranged in a line? Amer. Nat. LIV. 



Nachtsheim, H. 1912. Parthenogenese, Eireifung und Geschlechtsbestim- 



