PLATE 78 



A. — Soybeans growing in box set in soil (covers removed), shaded with 12 by 12 

 mesh netting. Soil kept relatively wet from germination to maturity. 



B. — vSeries of consecutive plantings of soybeans in the field during the summer. 

 All planting shad flowered when photographed September 8, 1919. Note (from left 

 to right) the rapid decrease in height of plants at the time of flowering as the dates 

 of plantings become later and later. 



