Micro-organisms of Maple Sap 



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TAItLE 67. PERCENT NORMAL A.CID OH ALKALI PRODUCED IN SIOAR 



FREE MEDIUM 



2. Sugar media. — To i% peptone solutions identical with 

 the control, 2% of dextrose, lactose, sucrose, and glycerin respec- 

 tively were added. The several media were treated like the 

 control except that they were sterilized by the intermittent method. 

 Analytical results obtained with these four media are shown in 

 tabular form. In general, previous to boiling, the acid produced 

 was masked by the ammonia formed. 



