Good pus is white, smooth, without an unpleasant odor, the kind on which the innate warmth has worked well, although the matter was not without the participation of extraneous warmth. The smoothness of pus as a sign is needed here only to show that it is suitable for receiving the action of the digestive force, and that its action is not different depending on the disobedience or obedience of matter. Good pus is required to not have a very unpleasant odor, because then it is further removed from decay, and they also say that it needs to be white, because the color of the main organs is white, and only nature, capable of overcoming matter, can make it like by this body.
And bad pus is fetid pus, indicating decay; it is opposite to mature pus and indicates the victory of extraneous warmth. They say that when pus comes out, the particles of which are not uniform in terms of smoothness and composition and are colored in different colors, then it is also not pus of a good kind. Any pus that appears in the body must necessarily become either putrid, or mature, or cold, or undergo some other change.