ESSENTIAL OILS, ETC. 197 



anthrax spores in fifteen days, but the development of these spores 

 is retarded by a solution of 1 : 80,000 (Koch). The anthrax bacillus 

 and staphylococci fail to grow in culture media containing 1 : 3,000 

 (Samter). The tubercle bacillus is destroyed by contact with thy- 

 mol for three hours (Yersin). Thymol has about four times less 

 germicidal power than carbolic acid (Behring). Antiseptic in the 

 proportion of 1 : 1,340 (Miquel). 



Tobacco Smoke. Tassinari found that tobacco smoke restrains 

 the development of bacteria, and that certain species failed to de- 

 velop after exposure for half an hour in an atmosphere of tobacco 

 smoke spirillum of cholera and Friedlander's bacillus. 



