generative organs and growths may be found on making an examination.
Absence of, or lack of vitality of the spermatozoa may be determined by
microscopic examination of the seminal fluid.

_The treatment_ is largely preventive. It is very important that breeding
animals be kept in proper physical condition by avoiding the feeding of too
heavy or too light a ration, and allowing them sufficient exercise. The
male is more often affected by the latter cause than the female. This is
because the average stockman does not consider exercise given under the
right conditions an important factor in maintaining the vigor of the male.
Young males should not be given excessive intercourse with the female. Such
practice is certain to seriously affect the potency of the animal. The
excessive use of the stallion can be avoided by practising artificial
impregnation of a part of the mares that he is called to serve. Sterility
caused by growths and closure of the os may be corrected by an operation.

Chronic inflammation of the maternal passages should be treated by
irrigating the parts with a one per cent warm water solution of lysol, or
liquor cresolis compound. The parts should be irrigated daily for as long a
period as necessary. Fat animals should be subjected to a rigid diet and
given plenty of exercise. Following this treatment a stimulating ration may
be fed for the purpose of encouraging the sexual desire. In weak and
debilitated animals, the cause should first be removed and a proper ration
fed. Cantharides and strychnine are the drugs most highly recommended for
increasing the sexual desire.

SIGNS OF PREGNANCY.--The signs which characterize pregnancy are numerous
and varied. For convenience we may classify the many signs of pregnancy
under two heads, probable and positive. Under the head of probable signs,
we may group the following symptoms of pregnancy: cessation of heat;