AND OTHER FERMENTATIVE CHANGES 289 
I next proceeded to examine the Pasteur’s solution. The liquid was still 
perfectly transparent and colourless, contrasting remarkably with the jet-black 
colour which I had observed to result in a much shorter period from the action 
of yeast upon the same fluid.1. There was, however, a good deal of white deposit, 
partly in the form of a loose sediment, partly as a delicate incrustation upon 
the side of the tube, and some white patches were floating free, probably in 
consequence of the disturbance of the vessel: there was also a little scum on 
the surface. Only about a sixth part of the liquid had evaporated ; and, as 
before mentioned, the part of the glass which had been left dry was studded 
over with little gelatinous bodies like those in the tube of urine. The tube 
being longer in the present case, I failed to pick out any of those little bodies 
with a needle. I was therefore obliged to content myself with examining a 
drop taken with ‘ heated’ pipette from the upper part of the liquid, including 
some of the white floating particles. These, however, proved all that I could 
desire, being composed of the same organism that I had found in the urine, and 
all the better seen because it had not been disturbed by the needle. 6, c, and d 
of Plate VII represent three entire plants, of which 0) fully equals in slenderness 
any seen in the urine; and some idea of its exquisite delicacy may be given 
by saying that ten such threads might le abreast in the diameter of a single red 
corpuscle of human blood. d is introduced as a good example of the production 
by such filamentous plants of substantial conidia having the characters of the 
cells of Torula Ovalis, while in c we have a plant which in some parts is as delicate 
as 6, while in others it looks as if composed of elongated cells of the torula. 
Other obviously transitional forms between the filamentous fungus and the 
torula are represented by the groups e, /, and g. Comparing the appearances 
of the organism as it occurred in the two glasses, the cellular element predomi- 
nated over the filamentous in the Pasteur’s solution, while the converse was the 
case in the urine. The toruloid groups, rare in the latter liquid, were abundant 
in the former, in which also the filamentous plants were as a rule of a coarser 
character, and were invariably small; that is to say, not extending to any 
great length, as they did in the other medium. The granules of the filaments 
and the nuclei of the cells were also much more marked in the Pasteur’s solu- 
tion. Along with this deficiency of the filamentous element, the bacteric form 
was absent in the Pasteur’s solution. Some of the buds were indeed as slender 
dormant in the liquid till it had become so altered under the influence of the torula as to be a suitable 
nidus for it. Meanwhile the fact of the morphological identity of this bacterium with buds from the 
filamentous fungus must be taken for what it is worth. 
* IT am not prepared to say whether the black colour which I have invariably found to be caused 
by the prolonged action of yeast upon Pasteur’s solution is due to the Tovula Cerevisiae or to other 
organisms accompanying it. 
LISTER I U 
