INCUBATION PERIOD 



117 



Table XLVIII 



EFFECT OF INCUBATION PERIOD ON MILK COUNTS ON 

 STANDARD AGAR 



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

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

 samples submitted to four laboratories, the forty-eight hour 

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



Table XLIX 



