References 347 



Romanes, G. J. Darwin and After Darwin. Chicago, 1892. 

 Saleeby, C. W. Parenthood and Race Culture. New York, 1909. 

 Semon, R. Das Problem der Vererbungslehre erworbener Eigen- 



schaften. Leipzig, 1912. 



Schafer, E. A. The Endocrine Organs. London, 1916. 

 Spencer, H. Principles of Biology. New York, 1883. 

 Thompson, J. A. Heredity. Edinburgh, 1908. 

 Thorndike, E. L. Animal Intelligence. New York, 1911. 

 Walter, H. E. Genetics. New York, 1913. 

 Weismann, A. The Germ Plasm. New York, 1893. 

 Weismann, A. Essays on Heredity. Oxford, 1889. 

 Wilson, E. B. The Cell in Development and Inheritance. New 



York, 1900. 

 Woods, F. A. Heredity in Royalty. New York, 1906. 



Monographs and Papers 

 Bailey, L. H. The Modern Systematist. Science, 46, Dec. 28, 



1917. 

 Bardeen, C. R. Abnormal Development of Toad Ova fertilized by 



Spermatozoa exposed to the Roentgen Rays. Jour. Exp. Zool., 



4, 1907- 

 Bateson, W. Presidential Address. British Ass'n Adv. Science, 



Australia, 1914. 



Baur, E. Vererbungs und Bastardierungsversuche mit Antirrhi- 

 num. Zeit. f. induk. Abstam. 3, 1910. 

 Boveri, Th. Zellen Studien. Die Entwicklung dispermer Seeigel- 



Eier, etc. Jena, 1907. 



Broman, I. Ueber geschlechtliche Sterilitat. Wiesbaden, 1912. 

 Brooks, W. K., Are Heredity and Variation Facts? Address be- 

 fore 7th Internat. Zoological Congress, 1907. 

 Castle, W. E. Studies of Inheritance in Rabbits. Carnegie Inst. 



Wash. Publ. n, 1909. 

 Castle, W. E. and Phillips, J. C. On Germinal Transplantation 



in Vertebrates. Carnegie Inst. Wash. Publ. No. 144, 1911. 

 Castle, W. E. and Phillips, J. C. Piebald Rats and Selection. 



Carnegie Inst. Wash. Publ. No. 195, 1914. 

 Castle, W. E. Piebald Rats and the Theory of Genes. Proc. 



Nat. Acad. Sci. 5, 1919. 

 Cattel, J. McK. The Causes of the Declining Birth Rate. Proc. 



First National Conference on Race Betterment. Battle Creek, 



1914. 



