Fig. 135. Bud variation (mutation) in a plant 

 of maize. The lower ear bears chiefly light 

 colored seeds, the upper ear bears chiefly dark 

 colored seeds. Each kind, as a rule, reproduces 

 its own sort. (After Emerson.) 



Fig. 136. Bud variation (mutation) in single ears 

 of maize. Each ear bears patches of very dark 

 seeds among the generally light colored s«H'd.s. 

 Dark seeds and light seeds reproduce each its 

 own sort, as a rule. (After Emersoa.) 



