122 



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Very slight in- 

 dication of 

 acidity on 

 23d day. 



Slight Indica- 

 tion of acid- 

 ity on 27th, 

 43d,andr)0th 

 days. 



Growth re- 

 tarded by 

 the glycer- 

 ine; no acid 

 formed. 



i ill! 



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