[English translation]

The 4 digestions of nature.
Note that these are the 4 digestions of nature that turn our food into the human body. Viz.
1. The first digestion is made in the stomach and there the food is cooked in the stomach and the substance of the food is sent to the liver through certain veins that transfer the nourishment.
2.The second digestion is made in the liver and the substance that the stomach has sent to the liver is converted into blood that the liver sends by the veins.
3.The third digestion is carried out in the veins which are nourishing the limbs.
4.The fourth digestion is made in the limbs by the capillary veins.... 176
1. The excess of the first digestion is the feces which nature sends to the bowels.
2. The excess of the second digestion is the urine which the liver sends to the kidneys. Then the kidneys distill it to the bladder through 2 pores, called the ureters, that are hung in the flesh.
3. The third excess of the digestion, which is made by the veins, is the sweat.
4. The excess of the fourth part of the digestion is the nails and the hair.
This is enough for you to know about the secrets of digestion..
Part of knowledge about the urine.

How to know the urine.
First, know that the 2 things that give color to the urine are the natural warmth of the body and the coldness and the 2 things that give texture to the urine are the humidity of the body and the dryness or the heat. The heat gives it the white color and the humidity gives it thickness, that is the turbidity. The dryness gives it clarity and makes it clear. One should examine the urine well outside and in the urinal.
First, you should know well that if the urine is red and very vermillion and thick and not clear, this signifies that the blood is too abundant. If it is vermillion and clear or yellow, it signifies that there is too much heat. If it is white and thick and dark in color and more thick than very clear, it signifies that there is too much phlegm. If it is white and clear and transparent, that signifies that there is too much melancholia. If it is brown and clear, that is transparent, that signifies that the blood is overheated through too much heat and there is great debility. If it is green and transparent, that signifies that there is very great debility of spirit so the blood appears polluted.

Another way to know if any infirmity might be cured or not.
Take the urine of the sick person and put on it a little milk from a woman. Add it very gently and if the milk goes to the bottom, the sick one will die. If the milk stays on top, he will be cured. This is a useful secret.

Another.
Rub the soles of the feet with a little lard and then give the lard to a dog or a mastiff to eat. If he eats it willingly, soon the sick person will be cured. If the dog does not eat it at once, consider the person's cure doubtful. Try this and you will see the proof of it.

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[Italian transcript]

Le 4 digestione dela natura.
Nota che queste sono le 4 digestione dela natura, che fa il nostro cibo inel corpo humano. Vz.
1. La prima digestione si fa inelo stomaco e li vi si cose el cibo. Et la substantia del cibo si passa alo fegato per certe vene le quale se adimandano n[u]risaiche.
2. La seconda digestione si fa inel fegato et la substantia la quale li a mandata il stomaco allo fegato se convertisse in sangue et lo fegato lo manda per le vene.
3. La terza digestione si fa inele vene le quale nustriscono li membri.
4. La quarta digestione si fa neli membri per le vene capilare.
1. La superfluita dela prima digestione sie la feccia la quale la natura manda ale budelle.
2. La superfluita dela seconda digestione sie la urina la quale lo fegato manda a gli rognoni e allora li rognoni la destillano alla vissicha per 2 porri li quali se dimandano horaides li quali sono appensi in la carne.
3. La terza superfluita dela digestione la quale si fa per le vene sie lo sudore. 4. La superfluita dela quarta parte dela digestione sie le ungie et li capelli.
Et questo ti basta circha ala digestione delo stomaco a sapere tali secreti.
Le urine, a conosserle im parte.
A conossere le urine.
Imprima e da sapere che quelle 2 cose che li da colore sie la calidita naturale del corpo et la frigidita et quelle 2 cose che li da in essa urina, cioe la humidita del corpo e la sechita honde lo callore se li da colore bianco et la humidita se li da lo spessume cioe che ella e torbida et la sechita se li da claritudine et la fa lucida opero e da guardare bene di fora e di drento del orinale.
Et e da sapere bene imprima se la urina sara rossa e ben vermiglia et alcuna spessa e non lucida, ella significha abondare di tropo sangue. Se ella sara vermiglia o clara o gilda, ella significa troppo collere. Se ella sara biancha e spessa e grossa di colore e piu spessa che ben chiara significa tropo flegma. Se ella sara biancha e chiara e lucida, significa tropo malinconia. Se ella sara bruna e clara, cioe lucida, significa chel sangue e come tropo brusciato per tropo collera et ha grande debilitade. Se ella sara verde e lucida, significa grandissima debilitade de spirito che lo sangue sie quasi come corotto.
Item a sapere de ogni infermita se debano guarire o no.
Piglia la urina del ditto infermo et falli premere um poco di latte di una donna pian piano. Et se’l latte va al fondo, lo infermo morira, et se’l latte resta disopra, guarira. Et questo e bel secreto.
Item.
Se tu li ongerai le piante deli piedi con um poco di lardo, poi lo da a mangiare a uno cane o mastino et se lo mangia voluntieri, presto guarira. Et se non lo mangia presto, tienlo in dubio. Et fane la prova et vedrai.