XXXIX. The natures of all are untaught.
XL. Blood of another is useful, one's own blood
is useful ; blood of another is harmful, one's own
blood is harmful ; one's own humours are harmful,
humours of another are harmful ; humours of another
are beneficial, one's own humours are beneficial ; the
harmonious is unharmonious, the unharmonious is
harmonious ; another's milk is good, one's own milk
is bad ; another's milk is harmful, one's own milk is
XLI. Food for the young partly digested, for the
old completely changed, for adults unchanged.
XLII. For formation, thirty-five days ; for movement,
seventy days ; for completion, two hundred
and ten days. Others, for form, forty-five days ; for
motion, ninety days ; for delivery, two hundred and
seventy days. Others, fifty for form ; for the first
leap, one hundred ; for completion, three hundred
days. For distinction of limbs, forty ; for shifting,
eighty ; for detachment, two hundred and forty days.
It is not and is. There are found therein both more
and less, in respect of both the whole and the parts,
but the more is not much more, and the less not