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starch paper. Charged eprouvettes were then (March 2) 
prepared in the usual way, to each of which a few drops of 
the ozonised water was added. On March 21 no organic 
forms whatever could be discovered in the liquid. The plugs 
were then removed. On the 27th the first tufts of* penicil- 
lium appeared, which have increased up to the present time. 
There are no microzymes in the liquid. 
2. Water known to be zymotic was treated with Condy’s 
liquid in quantity sufficient to colour it slightly, A few drops 
were then (March 2) added to a charged eprouvette. Up to 
the present time the liquid remains free from microzymes, 
but contains torula cells. On the same day a second charged 
eprouvette was treated with two drops of undiluted Condy’s 
liquid and plugged. It remained absolutely barren till March 
21, when the plug was removed. In a few days torula cells 
appeared, and on the 27th there were tufts of penicillium. 
3. A charged eprouvette was impregnated (March 2) with 
ordinary distilled water containing 0:1 per cent. of carbolic 
acid. At the end of a week the liquid was hazy and teemed 
with bacteria and torula cells. Ultimately penicillium tufts 
appeared on the surface. On March 8 the experiment was 
repeated with water containing 0°5 per cent. of carbolic acid. 
It remains up to the present moment free from microzymes, 
but contains torula cells and mycelium. 
4. A charged eprouvette was impregnated with ordinary 
distilled water (March 2) containing 071 per cent. of sul- 
phate of quinia, and plugged. At the end of a week it was 
opalescent and full of bacteria; it also contained torula cells 
and mycelium. On March 8 the experiment was repeated 
with water containing 0°5 per cent. of the salt. At the 
end of a week it was hazy, but on microscopical examination 
this was found to be due exclusively to torula cells. 
5. March 11.—A charged eprouvette was impregnated 
with distilled water containing 10 per cent. of the solution 
of peroxide of hydrogen. The liquid remained free from 
microzymes until March 21, when the plug was removed. 
Tufts of penicillium had already appeared on the 27th. 
6. March 11.—A charged eprouvette was impregnated with 
distilled water containing five per cent. of liquor chlori. The 
liquid remained barren until March 21, when the plug was 
removed. It is now crusted with penicillium. 
7. February 13.—A superheated eprouvette was charged 
with some of the superheated Pasteur’s solution which had 
been prepared five months before. The liquid was then im- 
pregnated with distilled water known to be zymotic. On 
March 4 the liquid was examined and found to be entirely 
