910 Brenchley . — The Development of the Grain of Barley. 
and then remains constant right up to harvest. In C, on the contrary, the 
fall continues for a much longer time, for thirty days, before a constant level 
is reached. 
C raws 
B 
A, 
C 
J 6 9/2 IJ !Q 2 / 24 27 JO 33 36 J9 42 43 4 3 Days 
Fig. 9. Actual ash contained in 1,000 grains. 
0 3 6 3 12 15 18 21 24 27 3 0 3 3 3 6 35 42 45 48 day* 
Fig. 10. Actual phosphoric acid contained in i,ooo grains. 
The actual amounts of ash and phosphoric acid in 1,000 grains (Figs. 9 
and 10) correspond with those of the amount of nitrogen present in that the 
