70 | THE FERTILIZATION 
packets of pollen. By the'time the nectar is exhausted 
the gland has become adherent to the bee’s head, and as — 
it (the head) is withdrawn, the two pollen masses are 
extracted from their pockets, and now stand off in front 
like a pair of horns. The bee, most likely, flies to another 
plant of the same species, or still more probably to another 
fiower of the same plant. Suppose the stigmatic surface of © 
this species of plant be broad, or possibly Gepatuiod almost 
into two parts; we will find the packets have slowly but 
surely diverged so as to be the exact width of that surface. — : 
Suppose on the other hand, the stigma be a narrow one, 
_we shall find that the packets have come close together. 
In either case when the bee’s head bobs down into the 
next flower, it will almost certainly happen that these 
same pollen masses will be left sticking on the stigma 
when the bee leaves, or at least part of the pollen will be 
_ These masses of pollen have long since beer 
7 quently observed on the bee’s head, but, until quite 
lately , no meaning had been attached to it. Some ento- 
mologists, I believe, have even been guilty of deseril i 
these as natural appendages to the bee’s head. 
