anded, to
relieve the cow from the injurious distention.

PARALYSIS OF THE HIND PARTS.

In ill-fed, weak, unthrifty cows palsy of the hind limbs and tail may
appear in the last weeks of pregnancy. The anus and rectum may participate
in the palsy so far as to prevent defecation, and the rectum is more or
less completely impacted. Exposure to wet and cold are often accessory
causes, though the low condition, general weakness, and the pressure on the
nerves going to the hind limbs are not to be forgotten. Something may be
done for these cases by a warm, dry bed, an abundant diet fed warm,
frictions with straw wisps or with a liniment of equal parts of oil of
turpentine and sweet oil on the loins, croup, and limbs, by the daily use
of ginger and gentian, by the cautious administration of strychnia (1 grain
twice daily), and by sending a current of electricity daily from the loins
through the various groups of muscles in the hind limbs. The case becomes
increasingly hopeful after calving, though some days may still elapse
before the animal can support herself upon her limbs.

EXTRAUTERINE GESTATION (FETUS DEVELOPING OUTSIDE THE WOMB).

These curious cases are rare and are usually divided into three types: (1)
That in which the fetus is formed in or on the ovary (ovarian gestation);
(2) that in which it is lodged in the Fallopian tube, or canal between the
ovary and womb (tubal gestation); and (3) that in which it is lodged in the
abdominal cavity and attached to one or more of its contents from which it
draws its nourishment (abdominal gestation). Undoubted cases of the first
and last varieties are recorded as occurring in the cow. The explanation of
such cases is to be found in the fact that the actively moving sperm cells
(spermatozoa) thrown into the womb have made their way through the
Fallopian tubes to the ovary. If they met and impregnated an ovum in the
tube, and if the consequent growth of that ovum prevented its descent and
caused its imprisonment within the tube, it developed there, getting
attached to and drawing nourishment from the mucous walls. Such product has
its development arrested by compression by the undilatable tube, or,
bursting through the walls of the tube, it escapes into the abdomen and
perishes. If, on the contrary, the spermatozoa only meet and impregnate the
ovum on or in the ovary, the development may take place in the substance of
the ovary, from which the fetus draws its nourishment, o