gi6 Bren chi ey . — The Development of the Grain of Barley . 
The curves of the intake of ash into the whole plant and the grain 
(Fig. 1 8) show that the points of maximum ash content coincide with those 
of the maximum nitrogen content. When once the maximum is reached, 
B 
A 
Plan! 
C 
A 
B 
C 
Grain. 
0 3 6 9 IS 15 18 2i 24 27 50 33 36 39 42 45 48 Days. 
Fig. i 8 . Actual ash contained in whole plant and in i,ooo grains. 
however, the ash in the whole plant begins to fall steadily, though the 
migration into the grain continues for some little time. In C the total 
ash in the plant shows a steady fall for four weeks before cutting, corro- 
borating the American experiments. 
The phosphoric acid (Fig. 19) remains fairly constant in all the plots 
when once the maximum has been reached, which coincides with the 
maximum for the ash. The fall in the latter curve is therefore due to 
