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K. V. KossiKov 



400 days, and not one of the 19 showed secondary fermenta- 

 tion. The results of experiments on adaptation of yeast to 

 fermentation of maltose are shown in Table III. 



Table III 



Adaptation of S. globosus to fermentation of maltose 



Adaptation of S. paradoxus to fermentation of 

 maltose and simple dextrins of malt -wort 



S. paradoxus readily ferments monosaccharides and sucrose, 

 but does not ferment maltose and dextrins of malt-wort. 



Experiment 1. Cells of S. paradoxus 37 were seeded into 8 

 Maysle flasks, with gas-seals, each flask containing 200 ml. 

 beer- wort (saccharimeter: 15°). The control flasks were seeded 

 with S. ellipsoideus. The flasks were weighed daily, and when 

 primary fermentation had ceased they were weighed every 

 tenth day. In one of the experimental flasks, secondary 

 fermentation began on the 350th day after the experiment 

 was begun. Seeding of cells from this flask into fresh medium, 

 containing maltose, showed that cells had become adapted to 



