INCUBATION PERIOD 



117 



TABLE XLVIII 



EFFECT OF INCUBATION PERIOD ON 

 STANDARD AGAR 



MILK COUNTS ON 



sample 685 is omitted, it becomes 2.1 with a variation of from 

 1.4 to 3.2. Conn 4 reports " that in the averages in 28 series of 

 samples submitted to four laboratories, the forty-eight hour 

 count was the larger in 25 cases, smaller in one case, and the 



TABLE XLIX 



BACTERIA PER C.CM. ON 



