400 
M. L. TRASBOT. 
on him, (Hie first horse) the operation required by the disease. 
This operation was performed in the usual way and from the 
condition in which the tissues left intact were, ought to have 
terminated satisfactorily. 
Five days latter, I was informed that he was very ill. He 
had eaten nothing since the day before, had an intense fevei, a 
high temperature of 40° C.j his diseased leg did not rest on the 
ground, was swollen as far as the hock and covered abo^. e the 
dressing by an abundant serosity. Fearing these might lie some 
complications of beginning gangrene towards the articular liga¬ 
ments, the animal was cast to see what could be done. My 
surprise was great, upon the dressing being removed, to find 
that the whole extent of the wound was granulating and healthy. 
I thought of a possible traumatic erysipelas. A dressing of tinct¬ 
ure of aloes was applied, and the patient watched. 
Two days later all was explained. The appetite had returned, 
the animal was lively, and its temperature down to 39° C.; the 
operated leg, though swollen yet, was resting on the ground, and 
was covered from the middle of the cannon down to the hoof 
with a confluent eruption of variola, perfectly manifest. After 
four or five days the secretion had become so abundant that 
almost all the epidermis became loose, and, in running the 
liquid formed little streams flowing down the surface of the 
hoof. It was a repetition of the case observed by Prof. Bouley. 
At the same time appeared other less numerous and regular 
pustules over different parts of the body, the lips and the nasal 
membrane. 
I had no more doubt as to the nature of the disease. I 
wanted, however, another experimental proof. 1 inoculated, with 
the serosity taken from the fetlock, a young calf with about forty 
incisions made on the skin of the abdomen, previously shaved, 
and I obtained a magnificent vaccine. 
The horse got well and returned to his work on the twenty- 
sixth day, being able to perform farm work. 
What had taken place ? 
It is easy to understand. After touching the gourmy horse, 
I had in operating, inoculated with my fingers my subject affected 
