How can animals who eat poisons be food for men?
Why in some foods is the liquid substance of the same nature as the solid, and in others not?
If the spleen causes laughter by purifying the blood, why isn’t love caused by the gall-bladder?
Why are the droppings of birds of prey white, of others not?
Does the blood alone nourish us?
How do sweet things sour on the stomach?
Should wine be drunk before or after eating, and immediately following or long afterwards?
Is water of more aid than wine in the process of assimilating food?
Which satiety is sooner removed, that from fats or from sweets?
How do salts possess the virtue of laxatives?