COMPARATIVE PATHOLOGY. 
307 
This last is an important fact, as it seems to show that it is 
sufficient to inoculate the females to obtain indemnity for the 
flocks.— Gazette Medicate. 
UPON A NEW PROCESS OF VACCINATION OF CHICKEN CHOLERA. 
By M. H. Toussaint. 
Every one is acquainted with the interesting discourses of Mr. 
Parteur relating to chicken cholera, and how, by the continued 
action of oxygen, he has succeeded in producing in this so deadly 
virus, such effects of attenuation as to allow, with safety, of its 
use in vaccination. 
The following arguments seem to indicate that the attenua¬ 
tion may be obtained in other conditions. 
Three years ago I presented the Academy with observations 
upon a disease with microbes, which I assimilated to those studied 
in 1864 and 1865, by M. Davaine, differentiating it from anthrax, 
and which M. Leplat and Jaillard had taken for sang de rate. 
In the month of October, 1878, I saw chicken cholera and 
had already in my mind assimilated that disease with the one I 
had observed in my experiments in the beginning of the year. 
The microbs of these two affections had a perfect resemblance, 
and showed a similar action in the rabbit. Further experiments 
of the same nature, made in 1879 and 1880 decided me to pub¬ 
lish the paper under the the title of ‘‘ Identity of acute experi¬ 
mental septicaemia and chicken cholera ,” in which I recapitulated 
the facts demonstrated by five series of experiments, in proof 
that the manifestations of chicken cholera could be produced bv 
inoculations of the microb of septicaemia. 
Recent facts have appeared confirmatory of these results. 1 
have just made two series of experiments—one with old carbun- 
cular blood, which was sent to me, the other with a rabbit, killed 
very rapidly by the inoculation of blood taken twenty hours be¬ 
fore from a tuberculous cow. 
Rabbits inoculated with the carbuneulous blood died in seven 
or eight hours with septicaemia. This altered blood contained a 
microbe nearly similar to that of chicken cholera. Inoculated 
