fection, and ready to
convey it to debilitated subjects and cause their death. The animal will
still live himself, and show no sign of disease further than I am about
to describe in the position. It is that which is taken in at the
nostrils and attacks the sub-maxillary glands, which become enlarged and
will remain so. When these become overloaded there will be a discharge
at the nose. That being thrown off, it may be some time before any
further discharge will be seen from the same source. In some cases, when
the discharge is constant, this can be easily distinguished from gleet
or ozena, from the healthy and natural appearance of the membranes of
the nose, which at first are pale, then become fiery red or purple. In
gleet the discharges from the nostrils, as in ozena, are of a very light
color. In glanders they are first of a deep yellow, then of a dirty
gray--almost slate color.

Mules affected with glanders of this kind, although it may seem hard
from their otherwise healthy appearance, should be destroyed. They
indeed carry with them the germs of infection and death, without any
visible marks in their appearance to warn those who have the care of
animals against their danger.

TEETHING.

As mules seldom change hands to any great extent until two or three
years old, it is not deemed necessary here to say any thing of their age
until they have reached two years, so as to give the inexperienced a
wider scope. The mule's mouth undergoes exactly the same changes as the
horse's. Between the ages of two and three these changes begin to take
place in the mule's mouth. The front incisor teeth, two above and two
below, are replaced by the horse for permanent teeth. These teeth are
larger than the others, have two grooves in the outer converse surface,
and the mark is long, narrow, deep, and black. Not having attained their
full growth, they are somewhat lower than the others, the mark in the
two next nippers being nearly worn out, and is also wearing away in the
corner nippers.

A mule at three years old ought to have the central permanent nippers
growing, the other two pairs uniting, six grinders in each jaw, above
and below, the first and fifth level with the others, and the sixth
protruding. As the permanent nippers wear and continue to grow, a narrow
portion of the cone-shaped tooth is exposed to the attrition; and they
look as if they had been compressed. This is not so, however; the mark
of some gradually disappea