TRANSLATIONS FROM FOREIGN PAPERS. 
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with quittor, which, no doubt, never hud* had gourme. I say 
that he never had it, for a second attack in the general cases when 
it takes place, never reaches such considerable proportions. 
I add that the eruption had been confluent precisely round the 
parts where the insertion of the virus had taken place, and gener¬ 
alized ; but limited everywhere else, even upon the lips and 
nostrils. 
By itself this fact is sufficiently demonstrative. But it was 
followed immediately by three others exactly alike, which com¬ 
bined have great value as experimental demonstrations. 
The horse, whose history I have just given, was thrown a 
second time, when the equine virus was beginning to be exhaled 
by the wound of the foot and the surrounding skin, on the 17th 
of April. Upon three other animals, operated on on the 18th 
and 30th of April and the 6th of May following, also for cartil¬ 
aginous quittors, the same phenomena were produced. 
How did the inoculation in those last three cases take place, 
they being in different stables ? With M. Nocard I thought it 
was produced through the medium of the hobbles or instruments 
used during the operation. What is important, however, is the 
fact that in all there had been inoculation and confluent eruption 
in the neighborhood of the points where the virulent product had 
been deposited. 
On the occasion of these four observations, which took place 
almost simultaneously, I remarked to the students how these 
facts reproduced the sore heels of Jenner—this quittor, the origin 
of vaccine, so long looked for ! how much, also, at another time, 
similar facts would be incomprehensible! and how, still, things 
absolutely obscure at one time, become, on the contrary, clear 
and easily understood when the questions with which they are 
connected are ultimately cleared off by good observations and 
carefully executed experiments. 
Evidently here there would be no great credit to see right; 
but only twenty years ago it would have been otherwise. And 
how many identical facts, though, perhaps, differing in form, 
must have taken place without being understood ! Was not this 
disease the same that was observed on the genital organs of the 
