GERMICIDES AND ANTISEPTICS. 223 



septic micrococcus in the proportion of 16 per 

 cent, it prevents the development of septicaemia 

 in the rabbit, after inoculation with septic blood 

 to which it has been added, in the proportion 

 of 1 : 400 (S). Exposure to a 20 per cent solution 

 for forty-eight hours did not destroy the virus 

 of symptomatic anthrax (Arloing, Cornevin, and 

 Thomas). 



Fcrri Chloridi Tinct. A 4 per cent solution was 

 fatal to the two species of Micrococcus^ but failed to 

 kill B. tcrmo. The micrococci were not destroyed 

 by a 2 per cent solution (S). 



Glycerine, in the proportion of 12.5 per cent, 

 destroyed the virulence of septicaemic blood, but 

 failed at 10 per cent (S). Glycerine has no action 

 upon the fresh virus of symptomatic anthrax 

 (Arloing, Cornevin, and Thomas) ; and is inert as 

 regards the spores of bacilli (Koch). 



Heat. The thermal death-point of the micro- 

 coccus of septicaemia (induced septicaemia in the 

 rabbit) is 140 Fahr. (60 C.), the time of ex- 

 posure being ten minutes ; that of the micrococ- 

 cus of gonorrhoeal pus (believed to be identical 

 with M. ureae, Cohn), is the same (S). The 

 micrococcus of fowl-cholera is destroyed by expo- 

 sure for fifteen minutes to a temperature of 132 

 Fahr. (Salmon). Nine or ten minutes' exposure 

 to a temperature of 54 C. is sufficient to com- 

 pletely kill the bacilli in anthrax blood (Chau- 

 veau). Cohn has assigned 55 C. as the highest 

 point at which bacteria studied by him have lived 

 and developed. Van Tieghem says that this tern- 



