Dourine of Horses. 
7 
cially in the hind legs. The animal becomes extremely emaciated, 
particularly in the hind quarters, and " tucked up " in the flanks. 
The first indication in paralysis is noted in traveling, when the 
animal fails to pick up one of the hind feet as evenly as the other. 
There is a tendency to drag the foot partially, which will wear the 
toe off more than normal. This condition may shift from one hind 
foot to the other, or both may become affected simultaneously, and 
then knuckling is a common symptom. 
Fig. 3.- — Dourine involving the external genitals and perineum of a mare. Note the areas 
from which color has disappeared. 
Only occasionally are the nerves of the forelegs and face affected, 
the latter being manifested in paralysis of an ear, an eyelid, a nostril, 
or a lip, or all combined. (See fig. 4.) Twitching of the superficial 
muscles has also been noticed in several instances. Swellings or 
plaques may break out on various parts of the body, especially on 
the croup, belly, or neck. They may disappear in a few days, only 
to reappear at some other point. These swellings are round, flat, 
and about the size of a half dollar, sometimes larger. \Mien punc- 
tured, a bloody serum oozes out of the cut surface. Figure 5 illus- 
trates the appearance of the plaques. 
