GERMICIDES AND ANTISEPTICS. 231 



of symptomatic anthrax when fresh, but has no 

 effect upon dried virus (Arloing, Cornevin, and 

 Thomas). 



Sodium Biborate. The results obtained with 

 this salt correspond, in the writer's experiments, 

 with those given by boric acid. The virulence of 

 septic blood, as shown by inoculation of rabbits, 

 was destroyed by 2.5 per cent, while 1.25 per cent 

 failed. That this is not due to germicide power 

 is shown by the fact that a saturated solution 

 does not kill the septic micrococcus, as proved by 

 culture-experiments. It also failed with B. termo 

 and the M. of pus. The multiplication of all of 

 these organisms was, however, prevented by the 

 presence of 1 : 200 in a culture -fluid, and B. termo 

 failed to multiply in the presence of 1 : 400 (S). 

 A 20 per cent solution does not destroy the viru- 

 lence of the virus of symptomatic anthrax, as 

 proved by inoculation experiments (Arloing, 

 Cornevin, and Thomas). In the proportion of 

 1 : 107, the development of bacteria in unboiled 

 beef-infusion is prevented, while 1 : 161 failed. 

 1 : 12 failed to kill the bacteria in broken down 

 beef-tea (de la Croix). 



Sodium Chloride, in 5 per cent solution, failed 

 to destroy the virulence of septicaemic blood (S). 

 Common salt ranks low as a preventive (Dougall). 

 It is well known that meat may become putrid in 

 a weak solution of brine, but the extended use of 

 salt as a preservative agent demonstrates its anti- 

 septic power, when used in a sufficiently strong 



