GERM THEORY OF FERMENTATIVE CHANGES vent 
mycetous fungi, and as de Bary has given the name Dematium fullulans to 
a closely allied microscopic fungus,’ I have ventured to suggest for this species 
the name Dematium fuscisporum. Further, the spores were often seen to give off 
exquisitely delicate threads as at 2 and k, while in / we have a combination 
of this delicate sprouting with toruloid pullulation in the same spore. Finally, 
there were observed in abundance among the filaments free bodies like / exactly 
resembling in form, size, and refractive power portions of these delicate sprouts. 
Some of them, not sketched, were seen to be branched, and yet, though in this 
respect and in the absence of the double rod-like character they deviated from 
the most typical form of bacteria, their bacteric nature was rendered indubitable 
by characteristic movement observed in several instances. I may add that in 
k that which is sketched as a branch of the delicate sprout was seen to oscillate 
from the position indicated to that of the dotted line, as if about to detach 
itself ; though this is an observation to which I do not wish to attach much 
importance, as the same appearance might possibly result from an accidental 
adhesion of a previously free bacterium. Taking the observation as a whole it 
affords proof positive of three distinct modes of germination of the spores of 
one and the same fungus, while there seems little reasonable doubt that the 
third mode was the source of the bacteria. 
It will be remarked that the bacterium which grew thus abundantly among 
the filaments of the Dematium on the dry glass differs entirely in appearance 
from that which was found in the milk and produced (as I think we are justified 
in saying) the viscous fermentation. And there is reason to think that they 
were in reality two entirely different species, and that the one derived, as it 
appears, from the Dematium (or some other exactly like it morphologically) 
which I have indicated in the plate as Bacterium No. II, existed in the milk 
along with that of the viscous fermentation (Bacterium No. I), though the 
latter took the precedence in development, so that the former escaped notice 
in the first instance ; as so commonly happens when germs of different kinds are 
introduced together into the same medium. For having inoculated a glass of fresh 
urine on the 30th of July with a portion of the viscid material from the second 
milk-glass, the product which first showed itself five days later by dimness of 
the liquid had none of the characters of Bacterium No. I, but resembled in 
elongated and curved form as well as in dimensions the one derived from the 
Dematium, see Plate XI, Urine, August 4. It was of course conceivable that 
the appearances in question might be merely the result of a modification of 
Bacterium No. I by the new medium in which it grew; the other alternative 
being that two bacteria had existed together in the milk, but that Bacterium 
1 See Morphologie und Physiologie dey Pilze, &c. Won Dr, A. de Bary, Leipzig, 1866, p. 183. 
LISTER I es 
