40 DROSERA ROTUNDIFOLIA. Cuap. U1. 
The little masses of aggregated matter are of the 
most diversified shapes, often spherical or oval, some- 
times much elongated, or quite irregular with thread- 
or necklace-like or club-formed projections. They 
consist of thick, apparently viscid matter, which in 
the exterior tentacles is of a purplish, and in the 
short discal tentacles of a greenish, colour. These 
little masses incessantly change their forms and posi- 
tions, being never at rest. A single mass will often 
separate into two, which afterwards reunite. Their 
movements are rather slow, and resemble those of 
. Amoebe or of the white corpuscles of the blood. We 
Q@\2 
Fic. 7. 
(Drosera rotundifolia.) 
Diagram of the same cell of a tentacle, showing the various forms successively 
assumed by the aggregated masses of protoplasm. 
may, therefore, conclude that they consist of proto- 
plasm. If their shapes are sketched at intervals 
of a few minutes, they are invariably seen to have 
undergone great changes of form; and the same 
cell has been observed for several hours. Eight rude, 
though accurate sketches of the same cell, made at 
intervals of between 2 m. or 3 m., are here given 
(fig. 7), and illustrate some of the simpler and com- 
monest changes. The cell A, when first sketched, 
included two oval masses of purple protoplasm touch- 
ing each other. These became separate, as shown 
at B, and then reunited, as at C. After the next 
interval a very common appearance was presented—- 
