698 TRANSLATIONS FROM CONTINLNTAL JOURNALS. 
ascertained tlic existence of (jiovardo cavallino (cutaneous 
fcruncle). The lymph collected from it Avas sent to Dr. 
Dalen, Avho experimented Avith it ten days aftei’Avurds, and he 
obtained^ he says^ similar results to those obser\^ed in Yenetia. 
The summary of these experiments is eoncliided as folloAvs :— 
The vaccine virus in man does not exclude that of grease, and 
thus reciprocally the lymph of grease may be inoeulated di- 
reetly to man, or indireetly tlirgugh the coav, Avith the same 
result. This lymph, by being transmitted from man to man, 
is capable of becoming humanised,'^ the same as the vaccine 
virus, and is a preventi\"c also of smallpox. 
For this communication I am indebted to the kindness of 
Dr. Lasegne. The French doctors and veterinary surgeons 
have generally taken the observations and experiments con¬ 
firmative of the ideas of Jenner too rigorously; the negative 
facts, Avhich they iuA^oke, cannot Aveaken positiA’e facts. It is 
said that tAventy, thirty, forty, fifty times, the grease has been 
inoculated Avithout success; but that does not proA^e that it is 
not inoculable, for the proof is that Viborg and Coleman, Avho 
for twenty years had in vain practised the inoculation, did 
at length succeed in communicating the vaccine by operating 
on man and the coav, Avith the matter of grease. Another 
fact, which proves likcAvise that fruitless attempts at inocu¬ 
lation do not establish the non-virulence of a malady is, that 
M. Renault only succeeded in communicating rabies from the 
lierbivora to the carnAora, after having made more than 
fifty unsuccessful experiments. I am perhaps the one 
amongst all others Avho has made the greatest number of 
unsuccessful inoculations Avith the matter of grease to the 
COAV, still I do not conclude from my experiments that it 
does not communicate the vaccine. 
The negative results of my experiments, and those of 
the author’s Avhich I have examined, Avere obtained under the 
most unfaA'Orable conditions. On the one hand, it is not 
shoAvn that it Avas tlie serous fluid of grease Avhich was 
used for the inoculation, and on the other, that the animals 
of the bovine species Avere Avell selected. Here are my 
doubts. Jenner, and after him all the other observers, 
have recognised the fact that the vaccine appears oftener 
* It is very much to be regretted that our learned colleagues of 
Germany, England, and Ital\% have comprised under the name of grease so 
many dillercnt lesions whicli anatomically considered are so very distinct. 
They would then have avoided a confusion which preA'cnts a good classifi¬ 
cation, and the exact definition of a maladv. As M. Revnal has eudea- 
voured to give us ihc opinions of the German veterinary surgeons relative 
to the origin of the vaccine from grease, he ought also to liaA’e given us the 
opinion of Professor Hermes, of Stuttgart, who does not believe in that origin. 
