translations from foreign papers. 
363 
and complete group. Indeed, the majority of authors have 
studied on one side the contagion of gourme, considering only, 
without thinking, its deviation, and on the other that of the 
horse-pox, equine virus, etc., that they regarded as a peculiar 
affection. Except M. Henry Bouley, who recognized the eruption 
first (herpes pldyctenoides) as a kind of epiphenomena of 
gourme, and who, though he did not write it, in 1863, do not hesi¬ 
tate to look to horse-pox as the characteristic sign of the disease, 
no one yet that I know, lias seen the intimate union existing 
between the two : and no one specially to this day, has expressed 
in a firm manner the idea that the horse-pox or variola of horses 
is the natural and regular form of the disease. One could not 
then gather in a single paragraph what remained separated in 
the mind. To-day it is not so. The time lias come to collect 
together these various forms of the same thing: gourme of old 
and modern writers, grease or sore heels of Jenner, pemphygoid 
rhinitis of David, horse-pox , variolous diseases of the horse 
described by Petatard, lymphangitis, called flyiug farcy; for all 
this is gourme. 
The study of the transmissibility of this disease must then 
comprehend all these phases of the question and collect together 
the documents spread here and there. And, considered in this 
synthetical manner, taken under this light, which with perfect 
conviction I consider as the truth, it becomes easy and can be 
briefly presented. 
The easiest mechanism of communication of the disease to 
understand is incontestably the direct inoculation. In taking the 
serosity exsudating from the surface of pustule deprived of its 
epidermis, and introducing it under peculiar conditions into the 
organism of a horse, until then free from the disease, one will 
o * 
surely transmit it. llepeated indefinitely and executed in similar 
conditions, the experiment will always give the same result. 
This introduction may be realized by numerous ways. 
One of the most eminent masters of veterinary medicine, 
Professor Chauveau (of Lyons) in different series of experiments 
instituted to study the transmission, regeneration and pathological 
anatomy of vaccine, has applied about all that can be imagined. 
