WEHMER'S TORULA 305 



at 14 C. The optimum temperature for growth seems to be situated 

 between 25 C. and 37 C. At 37 C. the yeast vegetates but stops at 

 40 C. This yeast ferments levulose. The inoculation of a guinea pig 

 gave negative results. 



Torula II. The cells are variable in shape, either spherical or 

 oval (5-5. 5 /z, in diameter). On Raulin's gelatin, the cells are round 

 and there are rudiments of a mycelium. On liquid media, there is 

 a sediment and after 10 to 12 days a slight ring 

 appears. Growth begins at 14 C. ; the optimum 

 temperature is between 19 and 20 C. 



Torula III. The cells are ordinarily spheri- 

 cal, rarely oval (4-6. 5 ju). On potato, the cells 

 are united into groups of 2, 3, or 4 individuals, Fig. 141-A. Twulalll 

 rarely more. There is a gelatinous substance ^? m .Va cc i ne (after 

 resembling a zoogloea. On liquid media an 



abundant sediment and a white scum are formed after 11 days. 

 This yeast develops at 14 C. The maximum temperature for bud- 

 ding seems to be situated between 25 and 37 C. The species is able 

 to grow at 45 C. /There is no fermentation and it is non-pathogenic. 



Olsen-Sopp have isolated from Taette along with Saccharomyces 

 taette major and minor some Torula which form small round or oval 

 colonies which are distinguishable from each other by their action 

 toward sugars. 



TORULA OF ROSE 



Rose l has isolated two types of Torula from the mucous secretions 

 of oaks. Both have round cells (5/z in diameter) and act as bottom 

 yeasts. One, Torula A, ferments dextrose, trehalose, ramnose inu- 

 line, a-and /3-glucosides and possibly melibiose. The other, Torula 

 B, acts like the Torula A and differs only by the fact that it does 

 not act on inuline and melibiose. 



WEHMER'S TORULA 



Wehmer 2 has isolated from pickle brine a small round Torula 

 which vegetates in nutrient solutions containing 10 to 15 per cent of 

 salt. In solutions of 21 per cent of salt it remains capable of develop- 

 ing for months. It seems to originate from sea water or the herring. 



1 Rose, L. Beitrage zur Kenntniss der Organismen in Eichenschleimfluss. 

 Inaugural dissertation at the University of Berlin. June 1910. 



2 Wehmer, C. Zur Bakter. und Chemie der Heringslake. Cent. Bakt. 3, 

 1897. 



