Brenchley. — The Development of the Grain of Barley. 917 
other ash constituents than the phosphoric acid. This result does not 
agree with that obtained by Le Clerc and Brezeale, who indicate a possible 
loss of 36 per cent, of the phosphoric acid in the plant by leaching. 
Figs. 20 and 21 illustrate how steadily the proportions of nitrogen and 
phosphoric acid in the straw decline during the formation of the grain, 
3 s & 12 13 /& 21 24- 27 30 33 36 3B 42 43 Days 
Fig. 20. Percentage of nitrogen in dry matter of straw. 
X 
owing to the rate of migration into the grain exceeding that of the intake 
into the straw. 
In order to get a bird’s-eye view of the relations existing between the 
various properties examined in barley, certain sets of figures have been 
averaged for the three plots and the results expressed, with appropriate 
