DISINFECTION. 425 



formalin -pas tils. Two pastils, each of one gram, are em- 

 ployed for every cubic meter of space. According to our 

 experience, trustworthy superficial disinfection can be 

 effected by this means for all bacteria without spores. 



DISINFECTION OF SHIPS, VEHICLES, RAILWAY-CARS, ETC. 



Entire ships, cars, etc., are disinfected in a manner similar 

 to that employed in disinfection of the sick-room. The 

 burning of sulphur, which was formerly much practised (20 

 grams of sulphur to each cubic meter of space, moistened 

 with alcohol before ignition), has been shown by Koch's 

 investigations to be relatively useless, and injures many 

 articles rather seriously. 



