580 PA THOGENIC BA CTERIA . 



charges from its body might be harmless, as compared, 

 for example, with the cadavers and discharges of anthrax, 

 because of the purely anaerobic method of the growth of 

 the bacillus of symptomatic anthrax and the rapidity of its 

 death in the presence of oxygen. This is, however, un- 

 true, for the rapid development of a permanent form in 

 the resisting spores of the bacillus makes the pollution 

 of the soil exceedingly dangerous for cows who subse- 

 quently browse upon it. That the spores are of great 

 vitality is shown by the well-known laboratory method 

 of keeping them on hand for experimental purposes, dried 

 in the muscular tissue of a diseased animal. 



Every precaution should be exerted to have the affected 

 animals isolated, and their cadavers disinfected and de- 

 stroyed or buried in such a manner that subsequent 

 infection is impossible. 



Statistical results of Guillod and Simon, based upon 

 3500 protective inoculations, show a distinct reduction 

 of the death-rate from 5-20 per cent, in unprotected 

 animals to 0.5-2 per cent, in protected animals. 



