30
Beginning of nutriment of breath, nostrils, mouth, throat, lungs, and the transpiratory system generally. Beginning of nutriment, both wet and dry, mouth, oesophagus, stomach. The more ancient nutriment, through the epigastrium, where the navel is.
31
Root of veins, liver; root of arteries, heart. Out of these travel to all parts blood and breath, and heat passes through them.
32
Power one, and not one, by which all these things and those of a different sort are managed; one for the life of whole and part, not one for the sensation of whole and part.
33
Milk nutriment, for those to whom milk is a natural nutriment, but for others it is not. For some wine is nutriment, for others not. So with meats and the other many forms of nutriment, the differences being due to place and habit.
34
Nourishment is sometimes into growth and being, sometimes into being only, as is the case with old men; sometimes in addition it is into strength. The condition of the athlete is not natural. A healthy state is superior in all.
35
It is a great thing successfully to adapt quantity to power.
36
Milk and blood are what is left over from nutriment.
37
Periods generally harmonise for the embryo and its nutriment; and again nutriment tends upwards to milk and the nourishment of the baby.
38
Inanimates get life, animates get life, the parts of animates get life.
39
The natures of all are untaught.
40
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 useful.
41
Food for the young partly digested, for the old completely changed, for adults unchanged.
