PLATE is 
A. —Kudzu (Pueraria hirsute (Thunb.) Scheid.). Seedling which was exposed 
to a 10-hour day during the summer months. Under these conditions there was 
little top growth but the basal portion of the stem was moderately tubemed. The 
plant was transferred to the greenhouse September 15, where it gradually passed 
into a condition of dormancy which seemed to be fully reached by December 1. 
The rest period, however, was short and by January 11 new shoots appeared. These 
shoots grew vigorously, although the leaves were of a darker green than is usual under 
a longer daily light period. Photographed February 19. . 
B. —Control seedling of Kudzu treated in all respects like the plant shown in A. 
except that it was exposed to the full seasonal length of day during the test. In 
the greenhouse the plant finally lost all leaves and became dormant like the plant 
in A Emergence from dormancy was delayed as compared with plant in A, ana 
new shoots did not appear till February 16. Photographed February 19. 
