The embryo in the world is adjusted...

The embryo in the world is adjusted, though it is confined within three distinct kinds of coverings the outer wall, the womb and the placenta. This is the time when the embryo can neither manage his nutrition nor ward off any harm from itself.

The menstrual flow is diverted to serve him nutrients, just as water carries nutrients to the plants, so this process goes on till such time as his constitution is perfected, his skin over his body becomes tough enough to withstand the atmosphere, and his eyes gain the capacity to withstand light. When all this is accomplished, its mother feels labor pangs, which shake her severely, culminating in the birth of the infant. With the birth of the infant, the menstrual flow ... is…