426 



Journal of Agricultural Research 



Vol. XIX, No. 9 



about the fifteenth or sixteenth day at Aberdeen. It is accompanied 

 by several other phenomena as well. The lemma begins to lose its color 

 in the center of the dorsal surface. The awns of the Hannchen variety. 



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Fig. 16. — Graph showing ash per kernel from date of flowering in 1916 (broken line) and in 1917 (soUd line) 

 and the percentage of ash in 191 7 (dotted line). 



which are more or less deciduous, drop off in large numoers. The tissues 

 of that part of the ovary above the embryo sac have been resorbed until 

 it is possible at this stage to measure the kernel without including this 



