1916] 
Emic—Yerast Funct 265 
This fungus was discovered by Raynaud and Lucet in the 
disease of ‘‘black-tongue.’’ Lucet (701) in his experimental 
studies demonstrated that this fungus did not reproduce the 
disease. According to Guéguen and Thaon, this yeast acts 
only when associated with Oospora lingualis. "There is, then, 
in these two fungi a sort of symbiotie relation. 
This organism has spherieal, ovoid, or elliptical cells, 
4—17 X 6». It grows on most media and in liquids forms a 
white film after ten hours at 37°C. It ferments glucose and 
levulose, with the produetion of alcohol and earbon dioxide. 
Development is accompanied by the production of acid, but 
no liquefaction takes place on gelatin. It has a slight patho- 
genie action on certain animals and is without effect on 
guinea-pigs and rabbits by subcutaneous or intraperitoneal 
inoculations. 
C. lithogenes (San Felice) Vuillemin, in San Felice, 
Zeitschr. f. Hyg. 21:32-58, 394-420. 1895-96. 
San Felice isolated this parasite from the lymphatic gan- 
glia of a cow that died as a result of primary carcinoma of 
the liver, with extensions of the infection to the entire lym- 
phatie system. In the tissues the cells are more or less 
spherieal, of variable dimensions, enclosed by a refringent 
membrane. This species grows well on all media. On glu- 
cose bouillon it forms an abundant deposit of yeast cells 
and often a film on the surface. It does not liquefy gelatin. 
It forms white yeast-like colonies on agar, and on potato 
the colonies become dark brown in color. It is pathogenic 
for the guinea-pig, mouse, and sheep. 
C. niger (Maffucci & Sirleo) Vuillemin, іп Maffucci & Sirleo, 
Zeitschr. f. Hyg. 27:1-30. 1898. 
This species was discovered by Maffucci and Sirleo (798) 
in a pulmonary lesion of a guinea-pig inoculated with the 
liver of an embryo taken from a tubercular mother. It is 
pathogenic for animals only after a long time. The cultures 
sterilized by heat are toxic for guinea-pigs. 
C. Tokishigei Vuillemin, in Tokishige, Centralbl. f. Bakt. 
1. 19:105-113. 1896. 
