APPENDIX I
SOME MANUSCRIPTS OF THE LIBER ASTRONOMICUS OF GUIDO BONATTI
Boncompagni states that there are several MSS in the Bibliothèque Nationale at Paris and the following are noted in the old catalogue: of the 14th century, BN 7326 and 7327: of the 15th century BN 7328, 7329 (a fragment), 7441 (defective), 7442 (containing only the treatises on elections and revolutions), 7443 (only the treatise De imbribus et aeris mutationibus). Perhaps the following also has reference to Bonatti: BN 7316, 15th century, #20 (and last item), Guidonis Bonafors liber abbreviatus per Fratrem Hugolinum de Faventia ordinis sancti Augustini qui ea tantum excerpsit quae ad astrologiam judiciariam pertinebant.
Some MSS in English libraries are:
Arundel 66, 15th century, fols. 48-249, membr. folio maximo, a de luxe MS made for the use of Henry VII, whose portrait occurs at fol. 201.
Additional 26768, 15th century.
Savile 15 (Bernard 6561), a large MS in which it is the last treatise.
Peterhouse 86, 15th century. Here we have the Liber introductorius in two parts, then come Nativities, Revolutions, Conjunctions, the 146 considerations, weather prediction, De partibus, and finally tractatus principalis de electionibus.
CU Trinity 1418, 15th century, contains portions of Bonatti’s work (James III, 445).
Other MSS are:
Vienna 2359, 14th century, fols. 1-38, Guido Bonactus de Foro Livii, Liber introductorius ad iudicia stellarum: fols. 39-50, Considerationes super iudiciis ...; fols. 51-52, Introductorium sub breviloquio ad iudicia stellarum; fols. 53-92, Explicit tractatus interrogationum seu questionum; fols. 93-119, Tractatus de electionibus secundum dicta sapientum; fol. 120v, Tabula magnitudinis et parvitatis diei; fols. 121-61, Tractatus super nativitatibus; fols. 162-6, De imbribus et de aeris mutationibus; fols. 167-200, De revolutione annorum et mundi; fols. 201-210, Tractatus proiectionum quarumlibet partium.
Vienna 3124, 15th century, some scattered parts from it.
Wolfenbüttel 2734, 14-15th century, in several hands, Liber introductorias ad iudicia stellarum ... editus a Guidone Bonacco de Forlivio....
Amplon. Folio 381.
CLM 59, 15th century, contains some of its treatises.
Arsenal 1129, 15th century, fol. 207, Liber astronomicus.
Dukes of Burgundy 1462, 15th century, Guidonis de Forlino, De judiciis astrorum, “Ex hiis autem ad judicia....”
Magliabech. XX, 14, 15th century, mutilated, ending at VIII, 18, in 129 fols. Incipit liber introductorius ad iuditia stellarum. Et est non solum introductorius ad iuditia set est Iuditiorum astronomie. Editus a Guidone Bonatto de Forlivio. Et collegit in eo ex dictis philosophorum ea que visa sunt.
Ravenna 356, 15th century, 6 fols, containing De imbribus et de aeris mutationibus et que circa illa versantur.
Vienna 3276, 14th century, fols. 275-80, Die kunst augurium, in German by Guido Astronomus, is perhaps an extract from Bonatti.