Ounar. XL DROSERA CAPENSIS. 279 
im. 30s.; and in 1 hr. 10 m. reached the centre. Two bits of 
boiled cork, one of boiled thread, and two of coal-cinders taken 
from the fire, were placed, by the aid of an instrument which 
had been immersed in boiling water, on five glands; these super- 
fluous precautions having been taken on account of M. Ziegler’s 
statements. One of the particles of cinder caused some inflection 
in 8 hrs. 45 m., as did after 23 hrs. the other particle of cinder, 
the bit of thread, and both bits of cork. Three glands were 
touched half a dozen times with a needle; one of the tentacles 
became well inflected in 17 m.,and re-expanded after 24 hrs.; the 
two others never moved. The homogeneous fluid within the celle 
of the tentacles undergoes aggregation after these have become 
inflected ; especially if given a solution of carbonate of ammonia ; 
and I observed the usual movements in the masses of proto- 
plasm. In one case, aggregation ensued in 1 hr. 10 m. after a 
tentacle had carried a bit of meat to the centre. From these 
facts it is clear that the tentacles of Drosera anglica behave like 
those of Drosera rotundifolia. 
If an insect is placed: on the central glands, or has been 
naturally caught there, the apex of the leaf curls inwards. 
For instance, dead flies were placed on three leaves near their 
bases, and after 24 hrs. the previously straight apices were curled 
completely over, so as to embrace and conceal the flies; they had 
therefore moved through an angle of 180°. After three days the 
apex of one leaf, together with the tentacles, began to re-expand. 
But as far as I have seen—and I made many trials—the sides of 
the leaf are never inflected, and this is the one functional differ- 
ence between this species and Drosera rotundifolia. 
Drosera intermedia (Hayne).—This species is quite as common 
in some parts of England as Drosera rotundifolia. Tt differs from 
Drosera anglica, as far as the leaves are concerned, only in their 
smaller size, and in their tips being generally a little reflexed. 
They capture a large number of insects. The tentacles are excited 
into movement by all the causes above specified ; and aggregation 
easues, with movement of the protoplasmic masses. I have scen, 
through a lens, a tentacle beginning to bend in less than a 
minute after a particle of raw meat had been placed on the 
gland. The apex of the leaf curls over an exciting object as in 
the case of Drosera anglica, Acid secretion is copiously poured 
over captured insects. A leaf which had embraced a fly with 
all its tentacles re-expanded after nearly three days. 
Drosera capensis.—This species, a native of the Cape of Good 
Hope, was sent to me by Dr. Hooker. The leaves are elongated, 
slightly concave along the middle and taper towards the apex, 
19 
