58 



purposes. The Illinois utility score card recognizes that, and the Illinois 

 farmers have proven it by extensive tests. In the choice of seed we must 

 direct our attention to its genetic constitution and its physiological condi- 

 tions during the period of its development, its dormancy, and its several 

 phases in the germinative process. The influence of nutrition, of water, and 



FIG. I. Types of smooth, medium rough, and rough corn. Kernels from these 

 ears are shown in Figure II, A, B and C, respectively. 



of the physical agents, as temperature, etc., profoundly affect the. delicate 

 organization and predetermine in large measure the nature of the crop and 

 the yield. 



In recent years we have paid considerable attention to experimental 

 breeding of our seed crops, and it Is right that we should. On the other 



