[English translation]

For the illness of an abcessed, swollen spleen, to make it come to a head.
Take 1 ounce each of gum ammoniac, juniper gum, bdellium and opopanax gum, 4 drams of lavender oil, 6 ounces of turpentine, ½ ounce each of fenugreek flour and linseed flour and enough lupin flour to thicken. Cut up the gums and soften them in strong vinegar for 4 hours and make them dissolve with the pestle. Put the turpentine on the fire and melt it. Then put in the oil and the gums and thicken with the flours. Incorporate it very well and it will be made. But first wash the place of the afflicted spleen with strong, warm vinegar. Then put on this warm plaster. Take care of yourself and you will be cured.

Another, a poultice and prayer.
Take 1 ounce each of rue, mint and mountain mint and ½ ounce of gum ammoniac dissolved in very strong vinegar. Make a plaster of these and put it on the spleen.

Prayer to wear around the neck for one who suffers from sickness of the spleen.
First say 3 Pater Noster with 3 Ave Maria. Then write this prayer and carry it fastened around the neck with thread spun by a virgin girl. These are the words, viz. 'In the name of the Father +, Son +, and Holy Spirit +, Amen. +
gc,gc,gc,v,g,d,gc,gc,di,di,gc,gc,gc,ver,v,v,v
. There is neither a monument nor glory except through the most holy and great God + + +.' Do this with confidence that you will soon be cured. Here is another similar to the above which cures the spleen when carried with you. Write in the way given above, viz.
'a,c,c,c,di,di, di,j,ver,v,v'
and after that write the same words, 'There is neither a monument nor glory except through most holy and great God + + + .' If you wish to test this prayer, attach it to the neck of an animal and leave it for 9 days. Then kill it and you will not find a spleen in the body, so much will it have shriveled up and diminished. But you know that at this time you should be careful how you live.... 157

Another to cure the spleen.
When you first see the new moon, take a pointed knife and sign three times with the point over the spleen and let the knife fall to earth. Each time you make the sign say this holy prayer, viz. '+ Holy moon that shines before the highest Father, dry up the spleen that is in my body as you did the herb in the garden of the Pharisee. In the name of the Father +, Son + and Holy Spirit +. Amen.' When you are ready to begin, say 5 Pater Noster with 5 Ave Maria in reverence to God and the 5 wounds of Jesus Christ. Do this at the start of the new moon for 3 lunar months in a row. Be careful when the new moon begins to say the above prayer and touch the swelling with the point of the knife and you will be cured.
Make an ointment in the following way. Take the herb rusty fern and the same amount of tamarisk and cut them minutely and cook them in oil of capers and oil of laurel berries, each the same amount. In the evening when you go to sleep, rub the sore place of the spleen with the ointment very warm and put on warm cloths. Do this for 3 lunar months and without doing anything else you will be cured. It has been tested many times.

Another to cure pain of the spleen quickly.
Take the gall bladder of a goat and put it on the painful spleen and let it stay on for one whole day, that is 24 hours. Then hang the gall bladder in a bowl either in the chimney or in the sun and when the gall bladder is dry, the spleen will then be cured. This has been tested.

Another to cure the spleen.
Take rue and grind it with honey and with fenugreek flour and put it warm on the spleen. Do this several times and it will be helpful. Likewise, take leaves of willow and grind them with salt and put them warm on the spleen. Do this several times and the illness will be diminished and you will be cured in the name of God.

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[Italian transcript]

A male di milza apostemata e sopra enfiata, a farla maturare.
Rx. armoniaco, serapino, bedelio, opoponacho, ana onza j, olio de spigo drame iiij, trementina onze vj, farina de fengreco e di seme de lino, ana onza s, e farina de lupini quanto basta per spessare. E amacha le gome e stiano a mole in aceto forte per 4 ore et dissolveli con lo pistello et meti la termentina al foco et fondela. Poi li metti l’olio e le gomme et spessa con le farine et incorpora benissimo et sera fatto. Ma prima laverai il loco dela milza adolorata con aceto forte e calda. Poi li metterai sopra questo impiastro caldo et conservandoti guarirai.
Item impiastro e breve.
Rx. ruta, menta, calamento, ana onza j, armoniaco onza s et lo dissolvi in aceto fortissimo et ne farai impiastro et meti sopra ala milza.
Item breve da portare al collo a chi patisse del male de milza.
Prima dirai 3 pater noster con 3 ave marie. Poi scrive el ditto breve e portalo apicato al collo del paciente con filo filato da una fanciulla vergine. E queste sono le parole, vz. ‘In nomine patris + et filii + et spiritus sancti +, amen +. gc, gc, gc, m, v, g, d, gc, gc, di, di, di, gc, gc, gc, ver, v, v, v. Non monumentum neque virtutum nisi per deum santissimum et magnum. + + + ’. Et farai questo esta siccuro che presto guarirai. Et questo ne un altro simile al sopra detto, portandolo adosso guarisse dela milza. Et scrive inel modo sopra detto, vz. ‘+ a, c, c, c, di, di, di, j, ver, v, v’ et sotto li va scritte quelle parole medeme, ‘Non monumentum neque virtutum nisi per deum santissimum et magnum + + +’. Et se tu vorai aprovare el ditto breve, attachelo al collo a uno animale et lasselo per 9 giorni. Poi lo amaza et non li troverai milza in corpo tanto sera dissechata e sminuita. Ma sapiati conservare inel ditto tempo del vivere.
Item a guarire dela milza.
Quando tu vedi la prima volta la luna nova, torai uno coltello apontito et segnerai 3 volte con la ponta sopra ala milza et lasserai cascare il coltello in terra. Et per ogni volta che tu signerai, dirai questa sancta oratione, cioe, + ‘Sancta luna che inanci al summo padre rilucesti, brusa la milza che e inel corpo mio como facesti l’erba inel orto del fariseo. In nomine patris + et filii + et spiritus sancti + amen.’ Et quando tu l’avorai incominciare, dirai 5 pater noster con 5 ave marie a riverentia de dio et dele 5 piaghe di yehsu christo. Et questo lo farai d’ogni principio de luna per 3 lunari continui. E stane advertito quando fa la luna a direla sopra detta oratione et tochare l’infiato con la ponta del cotello, e guarirai.
Et in questo mezo farai questa oncione. Torai erba citracha e tamariso, ana, et tagliela minuta et fala cosere inel olio de cappari e olio de robachelle de alloro, ana. Et la sera quando vai a dormire ongi il loco adolorato dela milza e chel sia ben caldo et sopra panni caldi. Et questo farai per tutti li 3 lunari et senza fallo alcuno guarirai. E piu volte e aprobata.
Item a guarire presto del dolore dela milza.
Rx. uno fele di una capra et mettilo insu la milza adolorata et fallo stare suso per uno di naturale, cioe 24 ore. Poi appicherai el ditto fele ala cadena overamente al fumo o al sole et quando serra secco il fele, alora sera guarita la milza. E provato.
Item a guarire la milza.
Rx. ruta et pestila con mele et con farina di fengrego et ponilo sopra ala milza caldo. Et falo piu volte e pigliera zovamento. Overamente torai foglie de salese e pestale con sale e meti sopra ala milza chel sia caldo. E falo piu volte el male si assuttigliera e guarirai inel nome de dio.