130 Brenchley . —On the Strength and Development of 
by the deposition of starch in the cells next the furrow at their own level. 
Part of the remainder of the reserve material so brought passes laterally 
outwards, and is deposited in the flanks of the endosperm, and eventually 
the cells next the furrow are filled up, so placing that particular portion 
of the conducting strand out of action, or rather crippling its activity 
to a very great extent. It is most probable that a certain amount of 
percolation can take place through the starch-filled cells next to the 
Grams per 
WOO grains. 
furrow, as these cells are blocked to the very end of the seed some 
little while before all the outer cells are filled with starch, but these 
latter cells fill up very slowly indeed, showing how difficult the percolation 
must be. 
During the year 1907 a good deal of progressive quantitative work, 
as yet unpublished, was carried out on the wheat grain in the course of 
development. The ‘green and dry weights of 1,000 grains ’ were ascertained 
every three days, and formed the basis to which all other calculations of 
quantitative analyses were ultimately reduced. Determinations were made 
of the actual amounts of ash, nitrogen, and phosphoric acid in the grain at 
