Experiment 7. Mortality of Bact. coli in M 1600 buffer of pH S.S at different 



temperatures 



Note: The buffer solution was identical with that used in experiment 6. 



Experiment 8. 



The mortality of Bact. coli at different temperatures in M/SOO 

 buffer at pH 6.1 



Note: The buffer consisted of 50 cc. M /5 KHiPO, plus 4.75 cc. M /5 NaOH in 

 5000 cc. distilled water. The original pH of 5.9 shifted to 6.1 during sterilization. 



227 



