-The symptoms may vary somewhat with each case, and closely
resemble the first symptoms of spinal meningitis, spinal tumors, and
myelitis. First, some disturbance in movement, lowering the temperature,
and partial loss of sensibility posterior to the seat of the congestion.
If in the cervical region, it may cause interference in breathing and
the action of the heart. When in the region of the loins, there may be
loss of control of the bladder. When the congestion is sufficient to
produce compression of the cord, paraplegia may be complete. Usually
fever, spasms, muscular twitching, or muscular rigidity are absent,
which will serve to distinguish spinal congestion from spinal
meningitis.

_Treatment._--Hot-water applications to the spine, 1-dram doses fluid
extract of belladonna repeated every four hours, and tincture of aconite
root 20 drops every hour until the symptoms become ameliorated. If no
inflammatory products occur, the animal is likely to recover.

SPINAL ANEMIA.

This may be caused by extreme cold, exhausting diseases, spinal embolism
or plugging of a spinal blood vessel, an interference with the
circulation through the abdominal aorta, from compression, thrombosis,
or aneurism of that vessel; the spinal vessels may be caused to contract
through vasomotor influence, a result of peripheral irritation of some
nerve.

Spinal anemia causes paralysis of the muscles used in extending the
limbs. When the bladder is affected, it precedes the weakness of motion,
while in spinal congestion it follows, and increased sensibility, in
place of diminished sensibility, as in spinal congestion, is observed.
Pressure along the spine causes excessive pain.

If the exciting cause can be removed, the animal recovers; if this
fails, the spinal cord may undergo softening.

SPINAL COMPRESSION.

When caused by tumors or otherwise, when pressure is slight, it produces
a paralysis of the muscles used in extending a limb and contraction of
those which flex it. When compression is great it causes complete loss
of sensibility and motion posterior to the compressed part of the cord.

Compression of a lateral half of the cord produces motor paralysis,
disturbance of the circulation, and difficulty of movement, an increased
sensibility on the side corresponding to the compressed section, and a
diminished sensibility and some paralysis on the opposite side.

_Treatment._--When it occurs as a sequence of a preceding inflammatory