By which four procedures, according to the translation, are diseases treated, and why should none of them be relied on alone?

Detailed answer

Whoever calls fire, poison or alkali wholly wholesome or wholly unwholesome is said to contradict the very treatment that prescribes them. In the treatment of poison, sucking out the poison of the wound, cutting and burning are called useful everywhere, and a wound that cannot be ligated is burned with a slight fire; when poisoned blood is let out with sharp instruments, the signs of proper letting are given as lightness of the body, lessening of the force of the disease and cheerfulness of mind.