daily for a period of from two to four weeks. We must be very careful not
to irritate the parts. A one-half per cent water solution of liquor
cresolis compound may be used.

Animals that abort should not be bred until they have completely recovered.
Small animals that have no special value as breeding animals should be
marketed. Cows and mares should not be bred for a period of at least three
months.

Infected males should not be used for service. The male should receive the
necessary attention in the way of irrigating the sheath before and after
each service.

PHYSIOLOGY OF PARTURITION.--Parturition or birth, when occurring in the
mare, is designated as foaling; in the cow, calving; in the sheep, lambing;
and in the sow, farrowing. A normal or natural birth occurs when no
complications are present and the mother needs no assistance. When the act
is complicated and prolonged, it is termed abnormal birth. The length of
time required for different individuals of the same species to give birth
to their young varies widely. It may require but a few minutes, or be
prolonged for a day or more. The cause of this variation in the length of
time required for different animals to bring forth their young, can be
better understood if we study the anatomy of the parts and their functions.

Throughout the pregnant period the _expulsion of the foetus_ is being
prepared for. As the foetus develops there is a corresponding development
of the muscular wall of the womb. The last period of pregnancy is
characterized by the relaxation of the muscles and ligaments that form the
pelvic walls, and a relaxation and dilation of the maternal passages. In
addition, degenerative changes occur in the structures that attach the