MEANS FOR KILLING BACTERIA. 667 



Sulphuric acid, 1 per cent, in water (incomplete after 



ten days) 

 Sulphate of copper, 5 per cent, in water (incomplete 



after five days) 

 Boracic acid, saturated watery solution (incomplete 



after six days) 

 Hydrochloric acid, 2 per cent, in water (complete after 



ten days) 

 Arsenious acid, 1 per thousand in water (complete 



after ten days) 

 Sulphuretted hydrogen in water (incomplete after 



five days) 



Ammonium sulphide (complete after five days) 

 Formic acid, 1'12 specific gravity (complete on the 



fourth day) 

 Quinine, 2 per cent, in water () and alcohol (;}) 



(incomplete on the first day) 

 Quinine, 1 per cent, in water with hydrochloric acid 



(complete on the tenth day) 

 Oil of turpentine (incomplete on the first day, complete 



after five days) 

 Chloride of lime, 5 per cent, in water (incomplete on 



the first and second day, complete after five days) 

 Chloride of iron, 5 per cent, in water (incomplete on 



the second day, complete after six days) 

 3. The following showed rapid and complete action, 

 all of them destroying the organisms on the first day : 

 Chlorine water freshly prepared 

 Bromine, 2 per cent, in water 

 Iodine water 



Osmic acid, 1 per cent, in water. 

 Permanganate of potash, 5 per cent, in water 

 Bichloride of mercury, 1 to 20,000 in water 

 A 5 per cent, watery solution of carbolic acid caused 



complete destruction of spores between the first 



and second day ; a 5 per cent, solution in oil or 



alcohol had no action on anthrax spores. 



We may also mention a series of experiments by Effect of a 

 Gartner and Plagge* which are more especially of carboilflck 



* Verhandl. der Deutschen Gesellsch.f. Chirurgie, 1885. or sublimate 



