276 Sir John Lubbock’s Address. 
of their stamens and pistils; the one form having the stamens 
on the summit of the flower and the stigma half-way down; 
while in the other the relative positions are reversed, the stigma 
being at the summit of the tube, and the stamens half-way 
own. ‘This difference had, however, been regarded as a case 
of mere variability ; but Darwin showed it to be a beautiful 
dens, the sweetness of our fields. To their beneficent, though 
unconscious action, flowers owe their scent and color, their 
ney — nay, in many cases, even their f heir present 
shape and varied arrangements, their brilliant colors, their 
honey, and their sweet scent are all due to the selection exer- 
countryman, Ellis, described an American plant, Dionza, in 
which the leaves are somewhat concave, with long lateral spines 
and a joint in the middle; close up with a jerk, like a rat-trap, 
the moment any unwary insect alights on them. The plant, 1p 
fact, actually captures and devours insects. This observation 
also remained as an isolated fact until within the last few years, 
when Darwin, Hooker, and others have shown that many other 
species have curious and very varied contrivances for supplying 
themselves with animal food. 
s regards the progress of botany in other directions, Mr. 
He first observed cell-division in 1885, and detected the pres- 
ence of starch in chlorophyll-corpuscles in 1837, while he first 
