TRANSLATIONS FROM CONTINENTAL JOURNALS. 499 
that we find the great modification this malady undergoes 
relative to the expression of the symptoms from the simple 
serous exudation to the alterations of the subjacent tissue. 
He designates the cracks Javart, and sphacelus he considers 
as an intermediate morbid state. Horses of German origin 
are very subject to grease, but the malady is of rarer occur¬ 
rence now than formerly. The extension and good state of 
the roads, the improvement in the breed of horses and also 
in their alimentation, and the conveying dealers’ horses by 
railway instead of by the road, explain the rarity of grease at 
the present time. For these reasons we now but seldom 
meet with the tumefaction of the legs, and the serous exuda¬ 
tion, followed by deep cracks, &c., which were once observed 
on nearly all the horses newly imported. From the fore¬ 
going extracts it will be seen that grease presents itself at 
first with a tumefaction of the lower parts of the legs, pre¬ 
ceded and accompanied by febrile reaction, and then the 
eruption of vesicles and pustules, and the secretion of an 
abundant yellow serum. In the after researches on grease 
in relation to vaccine, it will be important to find out 
whether it takes on the pustulous form. On this point I 
must insist, and my communication has no other object than 
to call the attention of medical men and veterinary practi¬ 
tioners to this form of grease. In proportion to the length 
of time from the invasion, the skin of the legs is greatly 
modified; it thickens, cracks, ulcerates, and often becomes 
the seat of a multitude of reddish warty excrescences of a 
mammilated form. One who has not watched the progress 
of the symptoms, and the lesions to which horses’ legs are 
subject, from the beginning, has great difficulty in compre¬ 
hending the different forms that grease ultimately takes on 
from that which characterises its debuts From this error in 
observing the malady arises, in my opinion, the confusion 
and the controversy respecting the malady of the horse 
that engenders vaccine. I have always been of opinion, 
and I am still more so now after having heard the original 
text of Jenner, that grease and sore keels of that author cor¬ 
respond to the first period, that is the eruptive, vesiculous, 
and pustulous, of the eaux aux jamhes which I have described. 
I admit the same opinion in respect to the gangrenous 
malady, observed by Hertwig, of which M. Bouley has given 
you an extract, and of that which has been by some desig¬ 
nated the cracks, the sloughing of the skin, the divers 
exfoliations which constitute the pathological alterations that 
in veterinary language are designated by this last name, are, 
according to my sense of it, only different morbid states in 
