Foxglove and Toadflax 245 
walks over the hairs of the platform, and his hairy 
under-side picks up much of the pollen, which he will 
by and by brush off with his feet and add to the big 
pellets of pollen attached to his hinder legs. That is 
a bribe to take his attention from the pollen that is 
being brushed off the anthers by his back as he presses 
in to suck the honey secreted by the smooth ridge at 
the base of the ovary. Now look at the flower below, 
which is consequently older (Fig. 3). All the anthers 
have assumed the vertical position, have shed their 
pollen, andare empty. The point of the style appears 
to have developed a mouth: it has spht into two 
diverging lobes, the stigmas. Now the purpose of 
everything is evident. The anthers have _ been 
successively brought into line, their pollen covers the 
middle of the bee’s back, and now the stigmas are 
mature they occupy practically the same position. 
Let us suppose the bee we saw just now in the Fox- 
glove bell has flown to the next plant, well laden with 
pollen. He commences with the oldest flower, and 
leaves a little of his pollen upon the ripe stigmas, gets 
his honey, and goes off to the flower next above it, 
fertilisng that also. At the third flower, perhaps 
the stigmas are not mature, and in that case he gets 
more pollen, which can only be used to fertilise the 
flowers of another plant, because all those above the 
one he is in will be immature so far as the stigmas 
are concerned. 
You can tell on examining any of these flowers 
whether the bees have ealled and done their work; 
if they have, the anther-cells will be empty, and this 
is the condition in which we find most flowers that 
have been open a few hours. But should there be a 
