102 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. 13. 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. 



