106 
BACTERIOLOGY. 
from is not known, but in skin infections it is pre¬ 
sumed that they enter along the hairs or through 
small abrasions. -It is not a very infectious disease, 
and the infection of others may be prevented by dis¬ 
infecting the pus discharged. 
Fig. 14.—Microsporon furfur. (After Lenhartz.) 
Molds. 
The molds in their structure are much more com¬ 
plex than the yeasts. They are characterized by the 
formation of mycelial threads and terminal organs of 
reproduction called hyphse. They may be seen grow¬ 
ing on decomposing substances, and look like little 
pieces of cotton. Of the many kinds of molds, but a 
few are pathogenic for man. 
