218 GERMICIDES AND ANTISEPTICS. 



in 133 prevented the development of bacteria in 

 tobacco-infusion, while 1 : 200 failed (Bucholtz). 

 One part in 58 prevented the development of bac- 

 teria in a vegetable infusion (peas), while 1 : 81 

 failed ; 1 : 101 failed to preserve a solution of egg- 

 albumen (Klihn). A five per cent solution was 

 found by Koch, to be inert, the test being the 

 anthrax bacillus. 



Bromine. The spores of bacilli are killed by a 

 two per cent aqueous solution of bromine. In the 

 form of vapor this agent is superior, as regards 

 rapidity of action, to chlorine and iodine (Koch). 

 Bromine vapor is the most active agent for the 

 destruction of the virus of symptomatic anthrax 

 (Arloing, Cornevm, and Thomas). It destroys the 

 ferment of sour milk (Bacterium lactis] in the pro- 

 portion of 1 : 348 (Molke). The bacteria of broken- 

 down beef-tea are destroyed by 1 : 336 ; and the 

 development of bacteria in unboiled meat-infusion 

 is prevented by 1 : 5597 (de la Croix). 



Camphor does not destroy the infective proper- 

 ties of vaccine except when it is exposed for at 

 least a week in an air-chamber saturated with the 

 volatile oil (Braid wood and Vacher). Alcohol sat- 

 urated with camphor has no action upon the fresh 

 virus of symptomatic anthrax (Arloing, Cornevm, 

 and Thomas). One part to 2,500 retards the de- 

 velopment of anthrax spores (Koch). 



Carbonic Acid. Of five experimental vaccina- 

 tions with lymph subjected to this gas, three 

 succeeded (Braidwood and Vacher). 



