296 



KAN-ICHIRO MORISHIMA 



Day on which acidity appeared in xylose broth 



Original — fifth day 



I — fourth day 

 II— fifth day 

 III— third day 

 IV— third day 



Arabic numerals = interval in days between the appearance of a colony and 

 subculture from it on 1 per cent xylose media containing indicator. 

 Roman numerals = number of generations. 



We obtained only once a few pink colonies from a xylose 

 fermenter. Thereafter we obtained only black colonies from 

 xylose fermenter plates. 



Rawling's 



This strain was planted on 1 per cent xylose plates containing 

 decolorized china blue. 



O — Original 



II/9 



o 



1/7 \ 



O • 



\ 



111/12 



O 



IV/ll 



o • 



Production of acidity 



Original — seventh day 

 I — sixth day 

 II— fifth day 

 III — ^ninth day 

 IV — seventh day 



We could not obtain any nonfermenter from the cultivation 

 on xylose plates. 



From quick fermenters which we had isolated slow and rapid 

 types were readily obtained. 



