Diexodus medica de hepatis

8. For just as it is understood that it consists of a triple substance, so we establish that blood, which is perfect in genesei generation, is a humor composed of those parts and pure blood in due proportion.

9. Into such a humor, chyle passes by a further paraskeue preparation, where the heat that cooks it will be not only potentially, but also properly that of a certain viscus.

10. Every heat proper to a viscus follows its own constitution; for if the parts were composed only from the elements, the tactile qualities would be in the substances according to their logo ratio/proportion in the mixture.

11. In the Mesaraic veins, chyle is immediately imbued with a red color, but it does not accompany the hypographēn outline nor the teleiōsin completion of blood; if, however, it is argued that it is equal to the other, it will be by the mixing of returning perfect blood.

12. It seems unfair to attribute so much to the heat of the substance for the sake of its constitution, so that blood could be made; for it is sufficiently apparent that Nature did not intend an alloiotikon organon altering organ in the construction of the veins, but only a topon place.

13. If chyle carried into the Mesaraic veins immediately becomes blood, and is a participant in bile by periechonti energeia containing energy, and is subject to biō life, this humor will not be of much work.

14. If this heat is sufficient for teleiōsin completion by epirrytō inflow, Nature would have founded the archēn principle of blood-making heat in vain, since it is equally an organ serving the power in the production of the work.

15. Chyle, therefore, is only made in the Mesaraic veins, but it is not yet blood in act; if it becomes so, the faculty will have been communicated to them, not inherent in itself.

16. But from what principle? Since each part has its own ergon work. The heart, even if it is powerful everywhere in this government as to kyrion the lord/master, is nevertheless not omnipotent.

17. [Continuing]