CHANGES IN CELL-ORGANS OF DROSERA ROTUNDIFOLIA. 405 
Effect of Stimulation for Five Minutes on Apical 
Gland-cells. Fig. 4. 
The Cell Wall is coloured as in specimens fed for one minute. 
The specimen from which fig. 4 was taken had been only 
lightly touched by the egg-albumen, but in specimens in eon- 
tact with large masses of the albumen the same appearance of 
a pink substance between the apices of the apical gland-cells is 
seen as in the former specimen. 
The Cytoplasm has retracted from the walls, but remains in 
contact at one or two points with the basal wall and the lower 
parts of the lateral walls as usual. The coloration generally 
resembles that of fig. 2, though there is less of the scattered 
dark blue granulation. The blue corpuscle-like vacuoles are 
generally present in cells of this stage, though absent in the 
one from which the drawing was taken, which, in fact, shows 
scarcely any vacuolation, perhaps because its contact with the 
albumen used as food was comparatively slight. 
The Nucleus is, with regard to position, size, and shape, 
normal. It is of the same red tint or slightly redder than the 
surrounding cytoplasm, and its dark blue periphery is less 
definite and regular than formerly, as if broken at intervals, 
which may perhaps be due to a change in the nuclear mem- 
brane, the latter no longer staining with the blue. 
The Nuclear Chromosomes.—The individual granules have 
become larger and more conspicuous. The gland from which 
the drawing was taken was, however, the only one in the 
material examined at this stage which showed this development. 
The Nuclear Plasm is as dense as in unfed specimens, but 
the granular structure has fused, as already described in 
material after one minute’s stimulation. 
The Nucleolus is as in specimens fed for one minute. 
Effect of Stimulation for Ten to Twenty Minutes 
on the Apical Gland-cells. Fig. 5. 
The Cell Wall is in some specimens the same as in the last 
description, while in others no penetration of albumen between 
the cells can be made out, 
