just the same as there was one prepared for the flowers and birds. But
now I shall tell you another wonderful secret. Mothers do not have to
build nests, for they are already prepared for them right inside their
bodies close to their hearts. The nest is called the womb. Although we
do not have to build the nest, we have to take good care of it so it
may grow strong.

This nest and the tiny ovules are growing constantly from the time the
girls are babies, but they grow so very slowly that none of the ovules
are ripe until the girl is about twelve years old. After that one ripens
every month and passes to the nest or womb. At the same time an extra
amount of blood is sent to the womb to provide nourishing material for
the ovule to use in its growth. But the womb, or nest, is not strong
enough yet to hold a healthy baby, so this extra amount of blood with
the ovule is sent out of the body through the vagina, which is a
muscular tube leading from the womb to the external parts (private
parts). We call this flow the menstrual flow. This occurs every month
and each time the womb becomes a little stronger and better able to
hold a growing babe. But the womb is not fully developed until the
rest of the body is matured.

Menstruation is the sign of the possibility of motherhood. Realizing
this fact, one cannot fail to have a high idea of this function. Most
girls, naturally, desire children. Little girls love their doll babies,
and spend much time in caring for them, but as girls grow into womanhood
they desire real babies. A woman who does not desire children has had
her mind perverted by false ideas or fear.