VERSE PARALYSIS OF THE HIND EXTREMITIES).--Paralysis of
the hind extremities is usually due to some injury or inflammation
affecting the spinal cord. (See "Spinal meningitis," p. 232, and
"Myelitis," p. 233.) It may also be due to a reflex irritation from
disease of peripheral nerves, to spinal irritation or congestion caused
by blood poisons, etc.

_Symptoms._--When due to mechanical injury of the spinal cord, from a
broken back or spinal hemorrhage, it is generally progressive in its
character, although it may be sudden. When it is caused by agents in the
blood, it may be intermittent or recurrent.

Paraplegia is not difficult to recognize, for it is characterized by a
weakness and imperfect control of the hind legs and powerless tail. The
urine usually dribbles away as it is formed and the manure is pushed
out, ball by ball, without any voluntary effort, or the passages may
cease entirety. When paraplegia is complete, large and ill-conditioned
sores soon form on the hips and thighs from chafing and bruising, which
have a tendency quickly to weaken the animal and necessitate his
destruction.

LOCOMOTOR ATAXIA, OR INCOORDINATION OF MOVEMENT.--This is characterized
by an inability to control properly the movement of the limbs. The
animal appears usually perfectly healthy, but when he is led out of his
stall his legs have a wobbly movement and he will stumble or stagger,
especially in turning. When this is confined to the hind parts it may be
termed a modified form of paraplegia, but often it may be seen to affect
nearly all the voluntary muscles when they are called into play, and
must be attributed to some pressure exerted on the base of the brain.

LOCAL PARALYSIS.--This is frequently met with in horses. It may affect
many parts of the body, even vital organs, and it is very frequently
overlooked in diagnosis.

FACIAL PARALYSIS.--This is a frequent type of local paralysis, and is
due to impairment of function of the motor nerve of the facial muscles,
the portio dura. The cause may exist at the base of the brain,
compression along its course after it leaves the medulla oblongata, or
to a bruise after it spreads out on the great masseter muscle.

_Symptoms._--A flaccid condition of the cheek muscles, pendulous lips,
inability to grasp the feed, often a slow and weak movement in chewing,
and difficulty and slowness in drinking.

LARYNGISMUS PARALYTICUS, OR ROARING.--This condition is characterized by
roaring, and