PLATE 6s 



A.— Peking soybeans exposed to the light for 7 hours daily. Note the abundance 

 of full-sized green seed pods. Photographed July 9, 1919. 



B. — Control planting of Peking soybeans exposed to the light for the whole day — 

 that is, kept out of doors day and night. No blossoms had appeared when photographed 

 July 9. 



