Brenchley . — The Development of the Grain of Barley. 905 
the P 2 0 5 -starved (C) and the unmanured (B) plots show a practically flat curve, 
while the nitrogenous plot (A) indicates a slight but steady fall for the last 
twelve days before cutting. In each case the maximum green weight of the 
grain was attained from six to nine days before the maximum dry weight. 
In comparing the dry weight with the green weight (Fig. 2), it is seen 
that the percentage of dry in green rises almost to the end. In all three 
plots the relationship runs a very equivalent course for about eighteen days, 
