Divorce Manual

A handbook of marriage and divorce by Raymundus de Pennaforte (1175/85-1275) is one of the stars of the latest swathe of Vatican manuscript digitizations. The Summa Matrimonio is the classic remix, lightly adapted by Ramon from a previous textbook and itself modified soon enough.

Vincentius Hispanus of Bologna University is apparently the professor who contributed a compound diagram of incestuous marriages at 61r, introducing it as: "Hec conpositio arboris sanguitatis ..."
Of course it does not look like a wood-and-leaves tree. The top part looks like an arrow, the bottom part (glimpse it above) like a plinth, and the mid part (below) designed to somehow connect everything into one big confusing infographic, resembles too many stir-spoons spoiling a pot of broth:

As I have pointed out in the past: arbor should be taken simply as a medieval term for a recursive diagram.

Here is my list of digitizations noticed in the past seven days.
  1. Borg.arm.10
  2. Reg.lat.1261, 14th-century science and maths with Jordanus de Nemore, De Ponderis, and other authors. eTK lists De cometis, incipit: Occasione comete que nuper apparuit
  3. Reg.lat.1351
  4. Reg.lat.1482
  5. Reg.lat.1544
  6. Reg.lat.1567
  7. Reg.lat.1601
  8. Reg.lat.1607
  9. Reg.lat.1626
  10. Reg.lat.1627
  11. Reg.lat.1683
  12. Reg.lat.1697
  13. Vat.estr.or.109, in Japanese. Look at this spectacular binding cloth:
  14. Vat.lat.640.pt.1
  15. Vat.lat.640.pt.2
  16. Vat.lat.780
  17. Vat.lat.1250.pt.1
  18. Vat.lat.1262
  19. Vat.lat.2058, Commentary on the Almagest by George Trebizond. Anthony Grafton notes in his Rome Reborn catalog: Trebizond wrote a commentary as long as [his own Latin translation of the Almagest]. The commentary was severely criticized, which resulted in a falling out with Pope Nicholas V. This opulent manuscript was dedicated to Pope Sixtus IV along with Vat.lat.2055 of the translation. [Below is] a large figure of the model for the planet Mercury, shown at its least distance from the earth, with a list of Mercury's parameters and distances:
  20. Vat.lat.2229
  21. Vat.lat.2300 (above)
  22. Vat.lat.7228
This is Piggin's Unofficial List number 141. If you have corrections or additions, please use the comments box below. Follow me on Twitter (@JBPiggin) for news of more additions to DigiVatLib.

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