CLARIFICATION OF MILK. 



207 



Clarence Bahlman^ made eight tests of market milk in which he finds 

 an average increase of 27 per cent. 



Table XXXV. — Effect of Clarifying Milk on the Microbial Count 



(Bahlman). 



Test No. 



1. 

 2, 

 3, 

 4, 



5, 

 6, 

 7, 



8, 



Average 



Bacteria per Cubic 

 Centimeter. 



Raw. 



630,000 



900,000 



1,400,000 



455,000 



418,000 



3,150,000 



2,160,000 



1,380,000 



1,312,000 



Clarified. 



750,000 



980,000 



1,800,000 



730,000 



580,000 



4,005,000 



2,800,000 



1,720,000 



1,670,000 



Per Cent. 

 Increase 



Bacteria. 



19 

 9 

 28 

 60 

 30 

 27 

 30 

 25 



27 



These results correspond closely with those contributed by Stocking. 

 All tests have shown an increase in numbers. 



From Hammer 2 are gathered some modifications which give the nu- 

 merical increase and decrease of micro-organisms in milks containing' 

 germ-contents within certain limitations. 



• Bahlman, Clarence: Milk Clarifiers. Amer. Jour, of Pub. Health, 1916, Vol. VI, No. 8. 

 ' Hammer, B. W.: Studies on the Clarification of Milk. Iowa Agr. Exp. Sta., 1916. Bulletin 

 No. 28. 



