Has de humoribus theses

It still retains the name of nutriment, insofar as it is placed in the location of that which has flowed away.

27. The excrementitious humors, which are useless for nourishing the body, are twofold; some are according to nature, others are contrary to nature, of which [we say] nothing in this place.

28. Those are called natural which are produced and separated either in the second cooking (as they call it) together with the blood in the liver, or are left over from the third, which belongs to the individual parts and is called the true cooking.

29. The production of different humors in the liver depends not only on the diversity of the matter, nor only on the different constitution of heat, but on both; although more must be attributed to the deformity of the chyle.

30. Two main excrements are generated in the liver, which Galen compares to the flower and the dregs of fermenting wine, and they are bile and melancholic juice. Natural phlegm is not properly an excrement, but a certain unconcocted blood, which is carried together into the veins and is converted into a praiseworthy juice by greater cooking: whence it also obtained no peculiar receptacle from Nature.

31. Bile itself, because it is bitter and useless, is separated and expelled from the veins, where the paths lie open, into the gallbladder: For it is not attracted, since it does not nourish.

32. They say the melancholic excrement is transmitted into the spleen, and most people, with Galen, establish that use of the spleen, namely that it is a receptacle for that thick and dreggy blood, which it itself cooks again and elaborates for its own nutrition: But they wish for that which is inept for nutrition to be transfused into the stomach, so that by its acidity it might strengthen the actions of the stomach, or even excite the appetite for food.