^jourAl^KTim Spontaneous Generation. 265 
The largest measured xwoths of an inch across. They were tinted, 
of a pale-green colour. The periphery was double, like an olea- 
ginous cell, and the molecules radiating very regularly from the 
centre, and it appeared to me to be formed like a concavo-convex lens, 
or hollow or concave on one side and convex on the other. What 
this really was I cannot tell, as this was the only group or specimen 
that I have seen, and I know of nothing Hke it (Fig. 14). 
23rd day. — We now come to a very curious vegetable growth, 
springing from what appears to be only an irregular oleaginous 
cell ; for I could not discover with the most careful investigation 
anything like a true vegetable cell enclosed in the oil-cell, and I 
have had opportunities of watching the growth of this from its first 
appearance, as the plant has been very frequent in the liver infusion, 
but I saw nothing of it in the beef (Fig. 15). 
The plant first appears, as I have endeavoured to delineate it, in 
attached or free fusiform slightly-curved sharp-pointed fronds. They 
arrange themselves with their convex sides together, and they have 
then just the appearance of that curious Desmid Anhistrodesmus 
falcatus, Corda, and to which this seems nearly allied. On the 
34th day I noted a large mass of this plant ; it had then attained 
to the -j-^ih of an inch high, and the fronds of which it was composed 
measured about 4 oVo^li of an inch. It had a very remarkable appear- 
ance, and reminded one somewhat of the marine plant Sphacellaria 
seoparia. I observed that the young fronds of this plant when 
found free in the protoplasmic film are at first quite colourless. 
They afterwards attain to a pale olive-green tint, and when full 
grown to an olive-green. I have given the name of Chlorocyclos 
fasciatus to this plant, which means a bundle of green semi-circles 
(Fig. 19). 
From the 23rd to the 26th day I did not observe any parti- 
cular change, or any further development ; but on the latter day I 
observed a group of cells, varying in size, the largest measuring 
y/uoth of an inch in diameter. Each was divided into four divisions 
by broad dissepiments, each being provided with a double wall. 
They were of a delicate green colour, and reminded me very much 
of the cells in Ulva erispa (Fig. 16). 
On the 34th day the beef had developed some rather different 
forms to those of the liver, and particularly some masses of angular 
cells, imbedded in a transparent film. Each angular fragment or 
cell had a distinct round or elliptical nucleus ; some of the larger 
had two. These angular cells are crowded with molecules, except 
the nucleus, which is free. The beef appears to me to break up 
into these angular cells ; for when a small bit was placed between 
slips of glass, and pressed, it broke up into little tessera, each being 
held together by a transparent film. (See Fig. 18.) These cells vary 
in size from the yo^^ths to 5! ^^ths of an inch in diameter. 
