Whence is it that Infants Born in the Seventh Month are Born Alive.

Empedocles says, that when the human race took first its original from the earth, the sun was so slow in its motion that then one day in its length was equal to ten months, as now they are; in process of time one day became as long as seven months are; and there is the reason that those infants which are born at the end of seven months or ten months are born alive, the course of nature so disposing that the infant shall be brought to maturity in one day after that night in which it is begotten. Timaeus says, that we count not ten months but nine, by reason that we reckon the first conception from the stoppage of the menstruas; and so it may generally pass for seven months when really there are not seven; for it sometimes occurs that even after conception a woman is purged to some extent. Polybus, Diocles, and the Empirics, acknowledge that the eighth month gives a vital birth to the infant, though the life of it is more faint and languid; many therefore we see born in that month die out of mere weakness. Though we see many born in that month arrive at the state of man, yet (they affirm) if children be born in that month, none wish to rear them.

Aristotle and Hippocrates, that if the womb is full in seven months, then the child falls from the mother and is born alive, but if it falls from her but is not nourished, the navel being weak on account of the weight of the infant,............