MICRO-ORGANISMS AND FERMENTATION. 



certain cases effect an excellent clarification and good " break- 

 ing " in both fermentation vessel and cask. Saccharose, 

 dextrose, laevulose, and maltose are fermented, but not lactose 



Ascospore-formation (Fig. 58, 4) : 

 At 29 C. no ascospores are developed. 



27-28 the first indications are seen after 35 hours. 

 26-5 30 



25 28 



22 29 



17 44 



16 ,, 53 ,, 



10-5 7 days. 



8-5 ,, ,, 9 ,, 



4 no ascospores are developed. 

 Size of the spores 2 to 5 ju. 



Fig. 72.Saccharomyces Pastorianug III. (Hansen). Cell-forms of young sedimentary yeast 



(after Hansen). 



Film-formation : 



At 34 C. no film-formation occurs. 

 26-28 feebly-developed film-specks 



are seen after . 7-10 days. 

 20-22 9-12 



13-15 10-20 ) 



6- 7 1- 2 months. V(Fig. 73.) 



3 5 5-6 j 



23 no film-formation occurs. 



