ANTHRAX. 279 



the chemists are likely to find that the poison 

 present in the blood of animals suffering from 

 these different forms of septicaemia is the same, 

 although the microbes differ. According to Pas- 

 teur " there are as many different forms of septi- 

 caemia as there are different vibrios." l And in a 

 letter to his confrere, Dumas, he says : " Numerous 

 experiments have shown me that cultivation of 

 the bacteride (Bacillus anthracis) in a medium ex- 

 hausted by the microbe of fowl-cholera, although 

 real, is retarded, not abundant, and difficult. Con- 

 trary to the provisions which I have just recalled, 

 it may be, then, that fowls vaccinated for cholera 

 are refractory to charbon, which is due to a para- 

 site of quite a different nature. Such is precisely 

 the unexpected result which I have obtained in 

 some experiments not yet sufficiently numerous 

 to prove the fact." 



In a later communication, 2 Pasteur says : " It 

 may be considered as established : First. That 

 chickens are refractory to charbon. Second. That 

 chickens, when refrigerated, easily contract char- 

 bon. Third. That chickens in which charbon is 

 established by a lowering of temperature, may be 

 completely cured by warming them." 



According to Arloing, Cornevin, and Thomas, 

 immunity from anthrax does not protect from the 

 disease which they have studied and call symp- 

 tomatic anthrax ; nor does immunity from the latter 

 disease afford protection against the former. 



1 Charbon and septicaemia. Comptes rendus LXXXV. 



2 Comptes rendus LXXXVII., p. 47. 



