Appendix B 331 



VRIES, HUGO DE, The Mutation Theory. Vol. II, " The Origin of 

 Varieties by Mutation." English translation by Prof. 

 J. B. Farmer and A. D. Darbishire. viii + 683 pp. Chicago. 

 The Open Court Publishing Co. 6 pis., 149 figs. 1911. 



WALTER, HERBERT EUGENE, Genetics. An Introduction to the 

 Study of Heredity, xiv + 264 pp. The Macmillan Co. 

 N. Y. 72 figs, and Diagr. 1913. 



WILSON, E. B., The Cell in Development and Inheritance, xxi + 

 483 pp., 194 figs. Macmillan Co. 1900. 



Yearbooks U. S. Department of Agriculture. 1894r-1913. 



Hybrid Conference Report (First International Conference). 

 London. Printed in Journal of the Royal Hort. Soc., April, 

 1900. 



International Conference (Second) on Plant Breeding and Hybrid- 

 ization. Proceedings published as Memoir, Vol. I. Hort. 

 Soc. of New York. 1902. 



International Conference (Third) on Genetics. London. Report 

 issued by Royal Hort. Soc. 1906. 



International Conference (Fourth) on Genetics. Report pub- 

 lished in Paris, 1911, under Editorship of Ph. de Vilmorin. 



