278 MICROBES, FERMENTS, AND MOULDS. 
worm, Trichophyton tonsurans of cirinnate herpes, and 
Microsporon furfur of variegated pityriasis, are only 
different forms of one and the same parasite, of which 
he has made a successful culture on gelatine, repro- 
ducing its successive appearances. 
Grawitz, however, goes further than many micro- 
graphists will consent to follow him. He asserts that 
all the fungi of the human skin are only trans- 
planted forms, modified by the medium, of Oidiwm 
lactis, the white mould found on milk, bread, paste, 
potatoes, etc. 
So, again, Oidium albicans, the fungus of thrush, 
is, as we have said, specifically identical with Sac- 
charomyces mycoderma, or flowers of wine, a ferment 
which is developed on the surface of liquids which 
are acid and contain little sugar. This must not be 
confounded with Mycoderma aceti, a true bacterium, 
causing the acid fermentation of wine and beer. 
Still more recently, in 1883, Malcolm Morris and 
G. C. Henderson have stated that in an artificial 
culture of peptonized gelatine at the temperature of. 
from 15° to 20°, spores of Trichophyton tonsurans were 
developed, forming ramified hyphz which were after- 
wards covered with fructifications resembling those of 
Penicillium. 
Injections of Mould-spores into the Blood.— Grawitz 
injected spores of Penicillium and Aspergillus into 
the vascular system of rabbits, with the view of 
demonstrating their transformation into bacteria, He 
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