230 MASS. EXPEEIMENT STATION BULLETIN 187. 



Table XLVII. — Effect of Clarification on Pure Cultures of 

 Bacteria — Continued. 



B. colt. 



Suspended in — 



Before 

 Clarification. 



After 

 Clarification. 



Result 



or Per Cent. 



Removed. 



First Test. 

 Water, 



Broth (A. P. H. A.), . 



Skimmed milk, . 



Whole milk, 



Second Test. 

 Water 



Broth (A. P. H. A.), . 



Skimmed milk, . 



Whole milk. 



480,000 

 465,000 

 495,000 

 530,000 



370,000 

 395,000 

 315,000 

 400,000 



118,000 

 115,000 

 375,000 

 320,000 



90,000 

 135,000 

 215,000 

 280,000 



76 

 75 

 28 

 40 



76 

 66 

 31 

 30 



B. cyanogenes. 



Water, 



20,000 



7,000 



65 



B. megatherium. 



Water, 



10,000 



3,000 



B. subtilia. 



Water, . 



Gum tragic- water. 



70,000 

 70,000 



10,000 

 55,000 



B. subtilis. 



B. subtilis. 



