62 Plant Genetics 



intensifying factors, diluting factors, distribution fac- 

 tors, etc. These, however, do not introduce any new 

 mechanisms. 



1. BATESON, W., Mendel's laws of heredity. Cambridge. 1909. 



2. CZAPEK, P. and M. E., Biochemie der Pflanzen. Jena. 1913. 



3. EAST, E. M., and HAYES, H. K., Inheritance in maize. Conn. 

 Agric. Exper. Sta. Bull. no. 167. pp. 142. pis. 25. 1911. 



