276 



C.-E. A. WiNSLOW AND E. E. LOCHRIDGE 



TABLE 10. 

 Disinfectant Action of Hydrochloric Acid on B. coli in i per Cent Peptone Solution. 



TABLE ir. 

 Disinfectant Action of Sulphuric Acid on B. coli in i per Cent Peptone Solution. 



TABLE 12. 

 Disinfectant Action of Hydrochloric Acid on B. lyphi in i per Cent Peptone Solution. 



In these tables the dissociation values given are those determined 

 for distilled water, and not those v^hich actually obtain in a peptone 

 solution. The amount of dissociated hydrogen required for disin- 

 fection, when estimated in this way, is seen to be nearly lo times as 

 great as in tap water. For comparison the results are brought 

 together in Table 14. 



