304 TRANSLATIONS FROM CONTINENTAL JOURNALS. 
sive experiments on this subject by M. Sacco, who pro¬ 
duced the vaccine in children by inoculating them with the 
virus of the Claveau (variola ovina). In summing up I believe, 
contrary to the opinion of M. Bousquet, in the identity of 
the origin and nature of the vaccine and that of the variola. 
The vaccine in my opinion is nothing more than the variola 
inoculated in animals, producing either the cowpox or sheep- 
pox in them according to their species, and from them re¬ 
transmitted to the human subject. It is to be presumed that 
the eruption observed on the mare which served for the ex¬ 
periment of Toulouse, was an affection of this kind. All mala¬ 
dies capable of being inoculated from one species to another 
are fundamentally the same malady as variola, and in my 
opinion grease has nothing in common with vaccine. M. 
Renault, though agreeing in opinion with M. Depaul finds 
that he has somewhat deviated from the discussion in its prin¬ 
cipal object; he reminds him that when he communicated to 
the academy the experiments of M. Lafosse two years ago, 
he then said that he did not believe that it was the grease in 
this leg. The gist of the whole question all tends now, as you 
see, to confirm this opinion, but we must nevertheless recog¬ 
nise in the experiments of M. Lafosse an important fact. 
M. Huzard is also of the same opinion as M. Depaul, that it is 
impossible to attribute the origin of vaccine to maladies • 
so different as the furuncle or the grease. Rethinks that the 
horses aflPected with grease, and who according to the obser¬ 
vations which have been cited have transmitted the vaccine 
to the human subject, must have been at some time affected 
with another malady, probably one of an eruptive character. 
M. Depaul asked me in the last sitting if the observations 
cited were those of Jenner himself, or whether they were by 
a third party. It has been insinuated that the facts which I 
adduced were only stable talk. In order to economise the 
time of the members of the academy at the last sitting, I 
only ran over the heads of the chapters of Jenner^s book, 
indicating in a summary manner their contents; but as I am 
induced by the incredulity of M. Depaul to give greater 
precision to the proofs, I beg leave of the academy to quote 
the text of several passages from the translation of Jenner’s 
book, which I had only indicated before. M. Depaul persists 
in his opinion; he finds nothing in the quotations made by 
M. Boulcy, which he knew were already demonstrated, and 
that Jenner himself had seen the facts he mentions. 
{To he continued.) 
