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even when it is still alive, In the case of anthrax, the spore 

 formation of bacillus anthracis goes on only outside the body 

 of the animal, when the bacilli come in contact with the free 

 oxygen of the atmosphere. 



(9). Bacillus anthracis is a longer but narrower organism 

 than Bacterium Chauveau. In artificial culture, Bacillus an- 

 thracis appears as long filaments ; whereas, under similar 

 conditions, Bacterium Chauveau appears even shorter than 

 in its natural state, the reason being that this bacterium is an 

 anaerobic organism, incapable of full development in contact 

 with free oxygen of the air, 



(10). Bacterium Chauveau is rounded at the ends, Bacillus 

 anthracis, straight ; Bacterium Chauveau in decaying becomes 

 more inflated; but in a dry state, narrower (as in the vaccine). 



(n). Bacterium Chauveau is never found in chains of 

 three or more, like bacillus anthracis. The usual mode of 

 vegetation is by spore formation, sometimes, however, sec- 

 tion or gemmation takes place, but never in a series of more 

 than two, 



(12). An animal dying of anthrax is almost invariably 

 found bleeding from the anus and nostrils. An animal 

 dying of charbon has never this symptom. 



1.324. The black colour of muscles in charbon is caused 

 by the extravasation of blood into the muscular tissues, 

 caused by the solving action of the diastase of the Bacterium 

 Chauveau dissolving the muscular cells and allowing blood to 

 flow into them. Greater oxygenation goes on, the bcemog- 

 lobin of the blood losing more oxygen than in the natural 

 state, and the CO2 gas produced helping the further develop- 

 ment of the anaerobic bacteria. The light red arterial blood 

 becomes exaggeratedly veinous and dark, in consequence of 

 this action. 



1.325. The above information regarding anthrax compiled 

 by the author while working at Pasteur's Laboratory in Paris, 

 may be supplemented by quotations from a paper entitled 



