226 SYNOPSIS OF CONTINENTAL VETERINARY JOURNALS. 
tion of the phenomena which result directly from inocula¬ 
tion. This* is very remarkable in itself, but it is not all. 
Fowls inoculated with this attenuated virus acquire from 
this an immunity which protects them from the action of 
the natural virus, such as ordinarily, when inoculated, in¬ 
fallibly produces death. After the minor inoculation the 
effect remains nil, Thus, M. Pasteur transforms the most 
powerful virus, that which is most inevitably mortal, into a 
benign virus, which bears to itself the relation which vaccine 
does to variola. 
On hearing M. Pasteur make this communication to the 
Academy, with that loftiness of view and clearness of style 
of which all he does bears marked signs, each member 
present was struck with the greatness of these results, and 
the new horizons opening before medicine. Could not that 
which M. Pasteur has done for this most energetic of viru¬ 
lent matters be done for others ? Could not we succeed in 
transforming them also, and in making beneficial organisms 
so formidable by the immunity which they would give by 
their attenuated action. Why not ? 
The Academy in a body applauded when M. Pasteur ter¬ 
minated his reading, and these plaudits recommenced after 
the demonstration on living and dead fowls, which he gave 
of the effects produced by inoculation. I was struck, when 
examining in the laboratory of M. Pasteur the changes 
which the tissue at the seat of the inoculation under¬ 
goes, by the remarkable resemblances which exist be¬ 
tween these lesions and those which insertion of the 
virus of pleuro-pneumonia produces in the bovine species. 
Perhaps this similitude of effects results from similarity of 
causes, that is to say, the action on the part of the micro- 
bium of the virulence, reproducing in myriads. This must 
be elucidated by future experimentation. Thus, we see M. 
Pasteur's idea gains ground, in spite of all the negative 
results which have been opposed, and we may hope for 
much from the fecundity of his methods of enlightenment on 
those questions of contagion which have hitherto remained 
obscure. The results at which M. Toussaint has arrived, 
working in the line suggested by his master are a proof 
of it.” 
M. Bouley continues his chronique by discussing the 
question of the identity of black quarter with splenic fever. 
He gives three letters by M. Yernaut, of Clamency, from 
which u we may see that he, guided by his practical expe¬ 
rience, had been impressed with the noteworthy differences 
between the charbon fever and external charbon, that he un- 
