100 ANDREWS & BEALS: GROWTH OF ZEA Mays 
2. Puncturing the coats of the grains or the removal of a por- 
tion of the coats accelerates, as would be expected, the germina- 
tion under proper conditions. 
3: Too long soaking materially retards the growth for a time. 
4. Aérating the culture solution accelerates the growth. 
INDIANA UNIVERSITY 
