EDITORIAL. 
647 
sively. The right heart was dilated. The mitral valve showed 
lesions of vegetations of chronic endocarditis. At first, Dr. Ball 
thought this slut had chronic atheromatous aortitis, but careful 
examination failed him to detect any truly atheromatous lesion. 
There were more lesions of chronic aortitis, of arterio-sclerosis 
or perhaps the slut was only in the first stage of atheromatous 
degeneration. At any rate it was a plain case of ischemic inter¬ 
mittent lameness. 
* 
* * 
And now a glance in comparative pathology. I extract this 
from a lecture of Prof. Dejerine, as I think the connections re¬ 
lating to the disease under consideration are quite interesting. 
A woman, 37 years old, of healthy family, and having herself 
always been healthy, became ailing. Her troubles go back sev¬ 
eral years. Very quick and active, she noticed at a certain time 
that her left leg was getting weak. It got tired quicker than the 
right. That left leg was heavier and after walking a certain time 
she was obliged to’ stop. A few moments of rest were sufficient 
for her to regain her suppleness and easy motion, which she kept 
for a time, until after another little distance, some 200 or 300 
yards, the same condition obliged her to stop again. Lately the 
same symptoms have increased and extended to the right leg. 
They are indeed such that they interfere very much with her gen¬ 
eral condition. She can walk normally for a while, but soon has 
to give it up; she must sit down for a few minutes, after which 
she can resume her exercise. 
And Prof. Dejerine says: “In reality, in this instance only 
one diagnosis is possible, as there is only one disease that can pro¬ 
duce exactly these symptoms; it is that of peripheric intermittent 
lameness, due to obliterating arteritis of the lower extremities, 
similar to that observed in horses.” 
How interesting is this connection of a disease observed in 
such different species of living beings, described first by veteri¬ 
narians in large domestic animals, then in man by Charcot in 
