444 
M. L. TRASBOT. 
. (roubles more dangerous. There is, altogether, an exact propor 
tion between the extent and the malignity of the normal and 
abnormal phenomena belonging to one and to the other affec¬ 
tions. As to the nature of the pathological processes, they 
are identical in all the cases. Notwithstanding external modi¬ 
fications more or less marked, they, in reality, present no funda¬ 
mental difference. And besides, the deviations of the equine 
disease are far from being always mild. Some capillary bronchitis 
and all the gonrmy pneumoniae, lobular or others, are most gen¬ 
erally fatal. Their course is slower, but they remain, neverthe¬ 
less, incurable. 
Comparative studies of pathological physiology show conse¬ 
quently a similarity easy to recognize between gourme and 
variola of man and of sheep ; and this resemblance becomes 
altogether evident when one studies minutely all the symptoms 
by which it manifests itself. 
First of ail I will remark that in gonrmy horses, one, by close 
searching, will almost always find several pustules, varying in 
number, on different parts of the surface of the body. Whether 
the disease has the appearance of a simple angina, of bronchitis, 
or even of pneumonia, never is the specific eruption entirely 
missing. It is easier to find it in man or sheep, whose skin always 
show slight flat patches, red or brown, even very noticeable when 
the pustules are stopped in their development. On the horse, 
the pigmentation of the skin and the thickness of the hair con¬ 
ceal this sign, so well marked in other species. And it is more 
to the staring condition of the hair and to the presence of a 
kind of small lenticular nodosity that it can be discovered. 
This explains why they are often passed unobserved. Still it is 
possible, as in some extremely rare cases, that it cannot be recog¬ 
nized ; when, for instance, at the onset of the incubation, a serious 
pneumonia carries off the patient in two or three days. Some 
young horses may be seen dying in such a short time. It is evi¬ 
dent then, that there is not the slightest beginning of an eruption. 
But these facts are generally exceptional, and do not alter the 
character of the idea I am trying to establish, for the same thing 
may happen in sheep. 
