than in the inferior jaw. This results in the external border of the tables
of the superior row of molars becoming longer, or projecting further
downward than the internal border. The wear on the table surfaces of the
inferior row of molars is just the opposite of the superior row. In the
_scissor-mouth_ the wear takes place largely on the internal face of the
superior and the external face of the inferior row of molars. The teeth
become worn to more or less of a blunt cutting edge, and after a time the
molars come together somewhat like the jaws of a pair of scissors. A horse
with a badly deformed scissor-mouth is unable to grind the feed, and unless
given special care, suffers severely from innutrition.

_The treatment_ of deformed mouths consists in removing the irregular or
unworn portion of the teeth by means of the tooth float and cutters. This
attention should be given early before the free portion of the tooth has
become excessively long and irregular. This should be followed by dressing
the teeth every six or twelve months.

SHARP LATERAL BORDERS ON THE MOLAR TEETH.--This is a very common condition
in horses. The external border of the superior and the internal border of
the inferior row of molars wear away slowly, and sometimes become quite
sharp. This is objectionable because the sharp points lacerate the mucous
membrane of the cheek and tongue, and the mastication of the feed is
seriously interfered with.

This condition is _caused_ by an excessive difference in the width of the
jaws, unusually prominent ridges of enamel on the external face of the
superior molars, and any conditions that may limit the movements of the
jaw.

The following _symptoms_ may be noted. The animal has difficulty in