84 BOTANICAL GAZETTE [ FEBRUARY 
explanation; but the parietal placing of free endosperm cells is _ 
not to be explained in any such way. The phenomenon may be 
likened to that observed in connection with certain animals ani | 
animal cells, which seek a solid support that seems to be essen 
tial to their further activity. In the case of endosperm cells the 
parietal position is usually antecedent to the formation of cel 
walls, 
EMBRYO, 
There seems to bea general rule in the early divisions of the 
embryo, subject however to numerous exceptions, the causes 0 
which are doubtless accessible. The oospore usually elongates 
a i 
from the basal cell of the first division; and that the apical ee 
of the first division may contribute to the formation of ™ j 
ur preparations show, always in the 7 x 
cell (figs. 68-70). The persistence of. the synergid unuse” | 
occurs, and, so far as oO 
