298 NON-SACCHAROMYCETES OR DOUBTFUL YEASTS 



Torula No. 9.. The cells are ellipsoidal, sometimes in the shape 

 of lemons. There is a ring formed but no scum. The giant colonies 

 are flat and transparent. It ferments dextrose, levulose, galactose, 

 maltose, lactose, raffinose and arabinose. The temperature limits 

 are 0.5 and 40. It was isolated from brewing water. 



Torula No. 1. The cells are spherical or ellipsoidal. On liquids 

 the development is rapid with a superficial vegetation, at first in the 

 form of a ring, and later in a flat and white scum. It ferments dex- 

 trose, levulose, saccharose, maltose, lactose, raffinose and arabinose. 

 The temperature limits are 2 and 40 C. It was isolated from brew- 

 ing water. 



Torula No. 2. The shape and size of the cells of this yeast are 

 variable, in general, spherical or ellipsoidal. There are many giant 

 cells in the cultures. On liquid media it develops like the former 

 yeast. The giant colonies have a sort of crater in their centers and a 

 thin marginal part. It ferments dextrose, levulose, galactose, sac- 

 charose, maltose, raffinose and arabinose. The temperature limits 

 are 0.5 and 39 C. 



Torula No. 10. The cells are ellipsoidal or elongated. On liquid 

 media, the development is slow in the beginning with a sedimental 

 growth but finally a white or rose scum is formed. Gelatin is rapidly 

 liquefied. The yeast ferments dextrose, levulose, galactose, saccharose, 

 maltose, lactose and arabinose. The temperature limits are 2 C. and 

 35 C. 



Torula No. 15. The cells are spherical or ellipsoidal. It develops 

 slowly on liquid media with a superficial vegetation. The scum is 

 dull white in the beginning, then yellow. It ferments dextrose, levulose, 

 galactose, saccharose, maltose, lactose, raffinose and arabinose. The 

 temperature limits are 0.5 and 35 C. 



Torula No. 16. The cells are spherical and sometimes ellipsoidal. 

 They grow rapidly on liquid media. A yellowish brown scum is 

 formed. It ferments dextrose, levulose, galactose, saccharose, malt- 

 ose, lactose, raffinose and arabinose. The temperature limits are 

 0.5 C. and 30 C. 



Torula No. 12. The cells have a very variable appearance. They 

 are either round or ellipsoidal and small. It develops on liquid media, 

 almost always in the form of a scum, at first white, later becoming yel- 

 low. The giant colonies are reddish in their centers and white around 

 the periphery. It ferments dextrose and levulose actively and malt- 

 ose, galactose and saccharose feebly. The temperature limits are 2 

 and 35 C. 



