164 MICRO-ORGANISMS AND FERMENTATION. 



Film-formation : 



At 34 C. no film-formation occurs. 

 26 28 feebly-developed film-specks are 



seen after 7 10 days. 



20 22 55 ,5 55 55 ,, 8 lO 5, 



1315 j 3g) f 15-30 



,,675,) I 1 2 months. 



3- 5 5 6 



like Fig. 38, but without the large colonies. 

 2 3 no film-formation occurs. 



FIG. 38. 



Saccharomyces Pastorianus I. Hansen. Film-forms at 13 15 C., from 

 Holm's drawing in Hansen's Memoir. 



