discover whether a loop of cord is there. If it is, he can release it
easily. This condition, since it occurs so frequently and since it so
rarely produces harmful consequences, should not be considered
unnatural.

After the child is born, the physician cuts the cord, and in due time
the after-birth is expelled through the same passage as was the
child. The expulsion of the after-birth frees the mother of all the
tissue derived from the growth of the ovum, for the intricate
mechanism that served to nourish and protect the embryo was almost
entirely developed from the ovum itself. It is a remarkable provision
of Nature that very little of the mother's tissue is cast off at the
end of pregnancy; and even this small portion is promptly replaced.
By about the sixth week after delivery, the wound which was made by
the separation of the fetal sac has completely healed. Meanwhile the
mucous membrane that underwent elaborate preparations to receive the
ovum, the cavity that was adjusted to its growth, and the muscle
fibers that were strengthened to insure its safe entry into the world
have all regained their original state. Except for the activity of
the breasts, the mother is left in the same physical condition as
before she became pregnant.




CHAPTER III


THE EMBRYO