1916] 
Emic—Yertast FUNGI 259 
ascospore, and then growth takes place by budding. This 
yeast ferments dextrose and inverts saccharose. According 
to Casagrandi, it is pathogenic for the guinea-pig and rab- 
bit by subcutaneous injections. 
ENDOMYCES 
E. albicans Vuillemin, Compt. rend. Acad. Paris 127:630— 
633. 1898. 
The organism producing thrush has been variously classi- 
fied as Sporotrichum Gruby (1842), Aphtophite Gruby (1844), 
Oidium Robin (1853), Stemphyliwum Hallier (1866), Syringos- 
pora Quinquaud (1868), Mycoderma Grawitz (1877), Sac- 
charomyces Reess (1877), Monilia Plaut (1888), Dematium 
Laurent (1890), and Empusa Henri (1896). In its parasitic 
life E. albicans develops a more or less extended mem- 
branous layer, at first white, then gray, on the mucus of the 
primary digestive passages—mouth, pharynx, and oesopha- 
gus. This membrane, which attains a thickness of 1-2 mm., 
does not adhere to the mucus and is easily detached. A mi- 
eroseopie examination shows it to be made up of filaments, 
usually from 3-5 >x 50и. The terminal cells may often attain 
a length up to 600». According to Linossier and Roux (799), 
this organism does not grow in saliva. This peculiarity 
accounts for the fact that thrush occurs only in infants, more 
frequently during the first few months of life when the sali- 
vary secretion has been insufficiently established, and, in 
general, in all cases of infection accompanying a diminution 
of the secretion of saliva. 
On different media the fungus develops either by budding, 
like a yeast, or by the elongation and division of cells, as in 
Monilia. On carrot the mycelium is very well developed, 
whereas in nutrient liquids only yeast cells are present. Ас- 
cording to Vuillemin, the filamentous form is the normal 
method of vegetation, the yeast cells appearing in conditions 
of malnutrition. In sugar solutions at a temperature of 
30-35°C., chlamydospores form at the end of the filaments. 
The asci were discovered by Vuillemin (298) in old cul- 
tures on beet. They appear as large, ovoid or elliptical 
asci, 4-5» in diameter, formed by a lateral or terminal bud- 
