'20 



SCIENCE BULLETIN, No. 20. 



Dl 



Glucose Agar Plate Culture of Cream before pasteurising 

 (dilution, 1 to 1,000). 



Note great latent infection. The colonies developed represent 108,355,000 



micro-organisms per c.c., largely coliform types. (Original.) 



B2 



Agar Plate Culture of Cream after pasteurising by flash system, 

 at 182 deg. Fah. (dilution, 1 to 100.) 



Note the effect of pasteurisation. Number of organisms reduced from 



103,355,000 micro-organisms to 14,480. (Original. ) 



