io Lister . — Notes on the Plasmodium of 
of four surrounded only by water. Now, however, another 
wave of plasmodium advanced over it, and when again left 
bare on the following morning, the third day of the contest, 
the section was broken into small pieces and so reduced, that 
not a tenth of the original quantity remained. The struggle 
had been a tough one, for the whole lower side of the box 
was covered with broad bands and patches of grey slime, 
through which a tangle of long strings of bright orange 
plasmodium was twisted in strange disorder. 
To restore its healthy condition, I placed in the box a piece 
of fresh Stereum , upon which the plasmodium soon concen- 
trated itself in rich orange turgid waves, entirely withdrawing 
from the old pieces which were loaded with dead refuse. 
The following day, October 29, I cleaned out the glass box, 
replacing the healthy plasmodium, and added more fresh 
Stereum , on which, after rapidly increasing in volume, the 
plasmodium changed into sporangia on November 17. 
A species of Merulius with small brown spores and with 
a white mucedinous border, somewhat resembling Corticium 
putecinum , was quickly dissolved ; here again the dense ac- 
cumulation of the plasmodium prevented the process being 
observed. 
My next experiment was with the shaggy hairs scraped 
from the upper surface of Stereum hirsutum , well teased 
apart with needles. I placed the preparation in a glass box 
with pure plasmodium on cotton wool. It was at once seized 
upon and the plasmodium spread over a space measuring an 
inch and a half in circumference in the course of a couple 
of hours ; in another hour it had nearly withdrawn, leaving 
the bundles of hyphae apparently little changed, but close 
examination showed many threads to be thinned away and 
broken in their continuity. After four days, when waves of 
plasmodium had repeatedly passed over the preparation, it 
had diminished to about half its original amount, and a mag- 
nifying power of 560 showed fragments in all stages of 
dissolution. At the same time much remained in which 
no alteration could be observed. Other experiments gave 
