ACTION OF SALTS. 195 
Behring found that to prevent the development of anthrax spores a 
solution of 1 : 8,000 was required. 
Sodium Borate.—In the writer’s experiments a saturated solu- 
tion of borax was found to be without germicidal power. A twenty- 
per-cent solution does not destroy the virus of symptomatic anthrax 
(Arloing, Cornevin, and Thomas). A five-per-cent solution failed 
to destroy anthrax spores in fifteen days (Koch). Antiseptic in the 
proportion of 1:14 (Miquel). 
Sodium Carbonate.—A solution of 2.2 per cent restrains the 
growth of the typhoid bacillus, and of 2.47 per cent of the cholera 
spirilum. The first-named bacillus is killed by four or five hours’ 
exposure in a 2.47-per-cent solution, and the cholera spirillum by 
3.45 per cent (Kitasato). 
Sodium Chloride.—A. saturated solution failed in forty-eight 
hours to destroy the virus of symptomatic anthrax (Arloing, Corne- 
vin, and Thomas). A saturated solution failed in forty days to de- 
stroy anthrax spores(Koch). A saturated solution failed in twenty 
hours to destroy the tubercle bacillus in fresh sputum (Schill and 
Fischer). In the writer’s experiments a five-per-cent solution failed 
to kill Micrococcus Pasteuri in blood. Antiseptic in the proportion 
of 1:6 (Miquel). According to Forster, the bacillus of typhoid 
fever, the bacillus of rouget, and the streptococcus of pus are not 
killed by several weeks’ exposure in strong solutions of sodium chlo- 
ride, but the cholera spirillum is destroyed in a few hours. Cultures 
of the tubercle bacillus are not sterilized in two months by a satu- 
rated solution ; and tuberculous organs from an ox, preserved in a 
solution of salt, did not lose their power of infecting susceptible ani- 
mals inoculated with material from the diseased tissue. The flesh 
of swine which died of rothlauf was found by Petri to still contain 
the bacillus in a living condition after having been preserved in 
brine for a month. 
Sodium Hyposulphite.—In the writer's experiments a saturated 
solution failed in two hours to kill micrococci and bacilli. Exposure 
for forty-eight hours to a fifty-per-cent solution does not destroy the 
virus of symptomatic anthrax (Arloing, Cornevin, and Thomas). 
Antiseptic in the proportion of 1:3 (Miquel). 
Sodium Sulphite.—The results with a saturated solution of this 
salt were, in the writer’s experiments, entirely negative. 
Tin Chloride.—A one-per-cent solution acting for two hours de- 
stroyed the bacteria in putrefying bouillon, while 0.8 per cent failed 
(Abbott). 
Zinc Chloride.—In the writer’s experiments 1:200 destroyed 
Micrococcus Pasteuri in two hours, but a two-per-cent solution was re- 
quired to kill pus cocci in the same time ; spores of Bacillus anthracis 
