Saccharomyces. 



59 



Hormisdum cerevisia, Bail. 

 \Saccharomyces minor, Engel ?] 

 Cells mostly round or oval, 8-9 /a long, isolated or 

 united in small colonies. Spore-forming cells isolated. 



Fig. 58. — Saccharomyces cerevisicE ; a, a bud-colony; 

 b, two spore-forming cells (after Liirssen). 



1 1-14 fi long ; spores mostly three or four together in each 

 mother-cell, 4-5 /t in diameter, (Fig. 58.) 



Fig. 59.—" Low yeast," Sacckaromyces cerevisia; a, the 

 same, budding actively (after Pasteur). 



In beer, in both high, and low fermentation. 



The true beer-ferment is found in the various sorts of 



Fig. 60.—" High yeast," Saccharomyces cerevisia ; a, the 

 . same, budding actively (after Pasteur). 



beer, in both modes of fermentation ; it is cultivated on a 



