ALCOHOLIC FERMENTS. 



197 



SACCHAKOMYCES ELLIPSOIDEUS I. (HANSEN). (Figs. 56, 57.) 



Bottom-fermentation yeast. 



Sedimentary forms grown in wort : Mostly oval and round 

 cells; sausage-shaped cells are rare (Fig. 56). 

 Occurs on the surface of ripe grapes. 



FIG. 56. Saccharomyces ellipsoideus I. (HANSEN). Cell-forms of young sedimentary 

 yeast (after HANSEN). 



Ascospore-formation (Fig. 43, 5): 

 At 32 '5 C. no ascopores are developed. 



30*5-3 1*5 the first indications are seen after 36 hours. 



29-5 



25 



*& 55 



15 



10-5 



" )) 



4 no ascospores are developed. 



Size of the spores 2 4 /m. 



Film-formation : 

 At 38 C. no film-formation occurs. 



33-34 feebly-developed film-specks are 

 seen after 



26-28 



20-22 



13-15 



23 

 21 

 33 

 45 

 4 

 11 



days. 



6- 7 

 5 



(Fig- 57) 



?> 



no film-formation occurs. 



8-12 days. 



9-16 

 10-17 

 15-30 



2 3 months. 



