3.10 



micro-orgajsfisms in water 



Vitality of the Anthrax Bacillus and its Spores 

 IN Various Waters 



The following fig. 21 represents the appearance of an- 

 thrax bacilli when seen in a microscopic preparation. 



Chains of autbrax bacilli 



Solitary bacilli 



Bacilli containiiig spores 

 Fig. 21. — Bacilli or Anthrax. 



Spaces between the 

 rods of a chain 



For greater details concerning the various characteris- 

 tics of this organism, see p. 416, in the Appendix. 



Kraus has carried out similar experiments with 

 anthrax to those described with typhoid and cholera 

 bacilli, in which the effect on the pathogenic bacteria 

 of competition with the native water forms was shown 

 so prominently. 



Thus :— 



SiooreUss Anthrax 



Description of Water 



(1) Munich water supply 



(MangfaU) . 



(2) Well- water, Munich . 

 (3) 



(1) Munich water-supply 



(MangfaU) . 



(2) Well-water, Munich . 

 (3) 



Number of Days after Inoculatiou when Examined 



Number of Anthrax Bacilli foiind in 1 c.c. of Water 







; 



I 



Number of Water Bacteria found in 1 c.c. of Water 



2,100 

 7,250 



4,240 



