SOME EXPERIMENTS WITH DISINFECTANTS 



25 



IZAL. 



Organism. 

 B. typhosus. 



Staph, pyog. aureus 



Growth was absent in all tubes of 1-700 after 5 minutes' exposure, and in 1-800 after 15 

 minutes' exposure, in the case of B, typhosus ; in the case of Staphylococcus, it was 

 absent in 1-800 after 5 minutes' exposure, i in 900 after 10 minutes', and 1-950 

 after 15 minutes'. 



Organism. 



B. typhosus. 



Staph, pyog. aureus. 



SANITAS. 



Dilution of 

 Disinfectant. 



Pure. 

 1-5- 



I-IO. 



Pure. 

 1-5- 



I-IO. 



Time of Exposure 

 (in minutes). 



(+ = Growth 



=No Growth). 



Growth was present in all the tubes of B. typhosus and Staph, pyog. aureus, except the 

 tubes in which the Sanitas was applied undiluted. 



(261) 



