196 YEASTS AND MOULDS 



tendency to heal. More serious phases of this infection 

 are, however, met when .the lung is first affected. Then 

 a pneumonia, ending in sepsis, results. In these cases 

 the outlook is hopeless. The disease is probably due 

 wholly to the mechanical presence of the yeasts. The 

 germs leave the body in pus or sputum. They are 

 not easily destroyed, and all infective matter should 

 be burned. It is, however, not a very contagious 

 disease. 



g gift N 



FIG. 54. Saccharomyces Busse. X 350 diameters. (From Kolie 

 and Wassermann.) 



There is no antiserum treatment, and the few cases 

 upon which vaccines were tried have not held out 

 much promise in this direction. Yeasts are held 

 responsible for some diseases in lower animals, but the 

 question is not yet settled. When injected into them 

 intentionally varying results are obtained. It can be 

 said that they settle by preference in the lungs and 

 spleen. 



