293 
and other Mycetozoa. 
digestion of bacilli on account of the quiescent state assumed 
by a swarm-cell, which remained with little active movement 
for an hour and a half. On the previous evening I had placed 
some spores of Chondrioderma differ me in water under a thin 
cover-slip ; on the following morning swarm-cells were in 
great abundance in the pure water. I introduced a drop 
containing multitudes of bacilli from a glass in which a piece 
of Stereum hirsutum had been soaking for several days. In a 
short time a number of the swarm-cells were seen, attended by 
bacilli, some of which were attached to their pseudopodia, and 
some were already enclosed in vacuoles. The swarm-cell in 
question had taken an amoeboid form, occasionally producing 
and again withdrawing the cilium, while from time to time 
thin pseudopodia were extended from the opposite end, but 
more frequently the posterior region expanded into a some- 
what funnel-shaped mouth. Into such an expansion a stout 
bacillus about a /x long was seen to enter ; in the course of 
a few seconds it was enclosed with a noticeable amount of 
water, by the folding over of the lips of the funnel, and con- 
veyed into the body-substance ; a few minutes after, another 
bacillus was taken in, much in the same manner, but no globule 
of water was introduced. Ten minutes later a large bacillus 
4 /xx 075 \x was caught by a prolongation of one side of the 
funnel, and in the course of half a minute a tube-like extension 
of protoplasmic substance invested the bacillus, and it was 
drawn in (Fig. 8). It remained for a short time in direct 
contact with the granular matter of the body, but was soon 
surrounded with an oval vacuole (Fig. 9). The swarm-cell 
continued inactive for nearly an hour, when it assumed an 
extended form, and shortly after swam away with rapid 
jogging movement (Fig. 10). Constant observation was 
maintained during this hour, and the bacilli were seen gradually 
to dissolve in the vacuoles in which they lay, until at length 
all trace of them had disappeared together with their con- 
taining vacuoles, and only the contracting vacuole remained 
in the homogeneous granular substance of the swarm-cell 
At the commencement of the observation this granular 
