66 The Diseases of Animals 
agreeable odor. Any signs of a recent cleaning of the 
nostril, a dull lead color, or irritated condition of the 
mucous membrane should be regarded with suspicion. 
The mouth should be examined as to age and freedom 
from decayed, split, ulcerated or irregular teeth. The 
saliva should be free from any disagreeable odor. The 
tongue should be normal, held in position, and free 
from sears. <A searred tongue is indicative of the use 
of a harsh bit to control him, and is always to be care- 
fully considered. The incisor teeth should be examined 
for parrot mouth and signs of cribbing, the latter being 
shown by the edges of the teeth being worn away, so 
that they do not come close together. The side of the 
face should be examined for running sores or enlarge- 
ments that might come from diseased teeth. The lower 
jaw is to be examined for the same condition, and, in 
addition, for an opening or fistula of Steno’s duct, 
which earries the saliva from the large gland below the 
ear and pours it into the mouth. This duct winds 
under the lower jaw at the front edge of the large 
muscle, and when opened discharges a clear, watery 
fluid, especially when the horse is eating. The glands 
in the hollow between the lower jaws should also be 
carefully examined as to their size, whether tender to 
the touch or grown fast to the adjoining tissues. En- 
larged, adherent glands here are a symptom of glanders. 
The eye should be clear and bright and free from 
specks, cloudiness or a well-defined white ring around 
the outside of the colored iris. By closing the eye with 
the hand and excluding the light for a moment, the 
pupil will be dilated to its utmost capacity; when the 
