WHAT TIME IS REQUIRED TO SHAPE THE PARTS OF ANIMALS IN THE WOMB.
EMPEDOCLES believes, that the joints of men begin to be
formed from the thirty-sixth day, and their shape is
completed in the nine and fortieth. Asclepiades, that
male embryos, by reason of a greater natural heat, have
their joints begun to be formed in the twenty-sixth day,—
many even sooner,—and that they are completed in all
their parts on the fiftieth day; the parts of the females
are articulated in two months, but by the defect of heat are
not consummated till the fourth; but the members of
brutes are completed at various times, according to the
commixture of the elements of which they consist.