A commentary on the Centiloquium in Plato of Tivoli’s translation (C.3.1.1), composed by Conrad Heingarter for the Duke of Bourbon Jean II in or slightly before 1477. The unique manuscript was copied under Conrad’s supervision and was meant to be the presentation copy to the duke. As in the case of his commentary on the Quadripartitum (C.2.10), Conrad composed a preface to Jean II and rewrote and expanded on Abuiafar’s commentary (here attributed to Haly) to some extent.

Text ‘(Paris, BnF, lat. 7432) ‘Incipit Centilogium Ptholomei. [text] Prologus Haly. Dixit Ptholomeus: Iam scripsi tibi, Iesure, libros de hoc quod operantur stelle in hoc seculo… Propositio prima. Mundanorum mutatio ad hoc et ad illud corporum supercelestium… (135r) [conrad heingarter’s preface] Vetus oppinio est (ut dicit Cicero) iam usque ab heroicis ducta temporibus eaque et veteris populi Romani et omnium gentium firmata… ego vero tuus Conradus Heingarter excellentissime princeps Iohannes Borbonii atque Arvernie dux — illis premissis rem accedamus ipsam. [comm.] Dixit Ptholomeus propositione prima: Iam scripsi tibi, Iesure, id est domine, libros de hoc quod operantur stelle in hoc mundo et sunt multe utilitatis illis qui volunt prescire futura — [text] … si vero fuerint immobiles, erit proditor ex aliqua civitatum eiusdem climatis. [comm.] … ut perfecta atque completa secundarum stellarum notitia atque eorum (!) significatio (?) appareat. Et inveni quemdam parvum tractatum de speciebus cometum seu cometarum qui Ptholomeo ascribitur, eumque adiunximus in fine verbis Ptholomei, eumque glosavimus ut sequitur.’

Bibl. M. Préaud, Les méthodes de travail d’un astrologue du XVe siècle, Conrad Heingarter, thèse de l’école nationale des Chartes, Paris, 1969, xiv-xv; M. Préaud, ‘Les méthodes de travail d’un astrologue du XV^e siècle, Conrad Heingarter’, Position des Thèses de l’école des Chartes (1969), 143-149: 145; R. Lemay, ‘Origin and Success of the Kitāb Thamara of Abū Jaʿfar Aḥmad ibn Yūsuf ibn Ibrāhīm from the Tenth to the Seventeenth Century in the World of Islam and the Latin West’, in Proceedings of the First International Symposium for the History of Arabic Science (Aleppo, April 5-12, 1976), Aleppo, 1978, II, 91-107: 105; R. Lemay, Le Kitāb aṯ-Ṯamara (Liber fructus, Centiloquium) d’Abū Jaʿfar Aḥmad ibn Yūsuf [Ps.-Ptolémée], 1999 [unpublished], I, 396; A. Grafton, Cardano’s Cosmos: The Worlds and Works of a Renaissance Astrologer, Cambridge (Mass.), 1999, 136 and 141; M. Rinaldi, ‘Pontano, Trapezunzio ed il Graecus Interpres del Centiloquio pseudo-tolemaico’, Atti della Accademia Pontaniana, Nuova Serie 48 (1999), 125-171: 142-143; M. Rinaldi, Le Commentationes in Ptolemaeum di Giovanni Giovano Pontano: fonti, tradizione e fortuna del Centiloquio pseudo-tolemaico dalla Classicità all’Umanesimo, PhD dissertation, Università degli Studi di Napoli “Federico II”, 2002, 106-108; J.-P. Boudet, ‘Astrology Between Rational Science and Divine Inspiration. The Pseudo-Ptolemy’s Centiloquium’, in Dialogues among Books in Medieval Western Magic and Divination, eds S. Rapisarda, E. Niblaeus, Firenze, 2014, 47-73: 54; A. Calcagno, El libro delle Cento Parole di Ptholommeo. Saggio di edizione critica del volgarizzamento fiorentino del Centiloquium pseudo-tolemaico, Milano, 2021, 20-21.

Modern ed. Transcription of the beginning (MS Paris, BnF, lat. 7432, f. 134v-136r) by Rinaldi, Le Commentationes, 243-245.