496 TRANSLATIONS FROM CONTINENTAL JOURNALS. 
the cow, has been, however, clone by others, liis contempora¬ 
ries, or by the continuators of his works, and thus it has 
been experimentally demonstrated. As far as I am concerned, 
I have in vain attempted to inoculate the cow with the secre¬ 
tion from grease. But in spite of this want of success, I do 
not consider myself authorised to doubt or deny the success¬ 
ful results obtained by many other experimenters. In 
fact, when one has read without prejudice the experience of 
Loy, Carro, Viborg, Coleman, Kalbert, Steinbeck, Greve, 
Rosendalh, and Hertwig, one must be convinced that tlie 
matter of grease, under certain conditions, causes the develop¬ 
ment in man, as well as in the cow, of pustules similar to 
those of vaccine. I must be permitted to add that it would 
be manifesting oneself as too severe not to admit the fact be¬ 
cause it happens to be incomplete on some points, since at 
this rate there would be very few pathological questions 
solved if the observations on which they are grounded were 
scrutinised with the same spirit of doubt, prejudiee, and 
rigor, which has been brought to bear on the examination 
relative to the fact of the transmission of the virus of grease. 
I am aware that the adversaries to this opinion pretend that 
there is no proof that the authors whom I have cited have 
inoculated with the matter of grease. Sometimes, they add, 
it is a slight malady of the skin —javart cutanS, cracked 
heels, erythema,—which gave rise to the vaccine disease, 
either in the human subjeet or the cow. I will hereafter 
examine the value of this argument. I here confine myself 
to the declaration that it is not to be admitted that Viborg, 
Coleman, and the veterinary practitioners who have seen 
many of the horses that transmitted the vaccine disease, were 
not able to distinguish that designated grease from other 
maladies of the skin.* Before demonstrating that there is 
no mistake, the Academy will permit me to recapitulate in a 
few words the characters of grease from their debut. This 
seems to me the more necessary because several authors who 
have written on vaccine seem to have ignored the funda¬ 
mental symptoms which distinguish this affection. In vete¬ 
rinary medicine we find several maladies which, in their 
course, take on such different forms, that by a superficial 
examination they might be taken for distinct affections. 
What is more different than strangles which assumes the 
regular form, and those affections that appear with erup- 
* Why not ? M. Renault has admitted that M. Lafosse might have com¬ 
mitted an error in the diagnosis under a similar circumstance, and one will 
see further on the confusion of Viborg between vesicles and pustules.— 
