Paper (except f. 111-112, on parchment), 254 f., several hands, three of which stand out: I (Simon de Boesmare): f. 1-6, 8, 57-87, 89, 90-111, 113-116, 130-160 (in collaboration with hand II for f. 148-158), 164-172, 173v-183v, 212-219 and 229-239; II (Jean Halbout of Troyes?): f. 7, 9-48, 120, 125r, 126r, 148-158 (in collaboration with Simon de Boesmare), 184-211, 221-227 and 248-253; III (Roland l’Ecrivain?): f. 117, 121-124 and 127-129.

Astrologie and astronomy, in Latin and French: Guido Bonatti, Liber introductorius ad iudicia stellarum, Book X (1r-1v, continued f. 212r-219v, 8r-8v and 2r-4r); sequel of f. 1r-1v (2r-4r); ‘Cum Luna intraverit Cancrum hora Solis vel Virginem hora Veneris…’ (4r-5r, 6r); geographical coordinates of eight cities (4v); Robert Grosseteste, De impressionibus aeris, fragment (7r-7v); sequel of f. 1r-1v (8r-8v); ‘De fertilitate et habundantia. Secundum Haly quia Jupiter habet dominium in loco coniunctionis…’ (9r-11r); Blasius of Parma, prognostication for 1405 (11v-17r); ‘Perfecta electio rei incipiende est aptatio ascendentis…’ (17v-22v); Melletus de Russis de Forlivo, prognostication for 1405 (23r-32v); John of Murs, judgement on the great conjunctions of 1357 and 1365 (33r-34v); ‘De viribus planetarum et revolutionibus annorum. In revolutionibus annorum ingressus planetarum…’ (35r-42v); Jean Halbout of Troyes (?), prognostication for 1415, in French (43r-48v); historical notes on the period 1218-1478 mainly in France, Latin and French (48v-51v, 52r and 56r-56v), with additions by Simon de Phares: Revelatio Esdrae, two versions in French (52v-53r), tonitruale in French (53r), ‘Prima die mensis Septembris, Carnis (!) aparet cum Solis ortu…’ (53v-54r) and horologium (54v-55r); Simon de Boesmare, horoscopes and astrological notes about the political situation in France in 1407-1408 (57r-69v); Simon de Boesmare, calculs and notes on the great conjunctions (70r-73r); Simon de Boesmare, horoscopes and astrological notes about the political situation in France in 1437 (73v-86v); revolution horoscopes for 1418 and 1442-1445 (87r-90v); Simon de Boesmare (?), text on the 12 houses and the interrogations of the first house, in French (91r-106v); ‘De electionibus. Si vis incolumen, si vis te reddere sanum…’ (107r-108r); John of Saxony, Canones, fragment (108v); ‘Sequitur pro sciendo quando planete sunt orientales vel occidentales. Tractemus si accidat ad invicem 5 planetis…’ (109r-109v); Simon de Boesmare, medical, astrological and astronomical notes (109v-111r); table of lunar mansions (111r); diagram of the celestial sphere and the lunar mansions (111v-112r); two astronomical tables (112v); Hermes, Liber de quindecim stellis, excerpt (113r-115v); Simon de Boesmare, notes in French, dated 1431 (116r-116v); Roland l’Ecrivain (?), horoscopes and astrological notes about the political situation in France in 1426-1427, in French and Latin (117r, 121r-123r, 129v-127r and 124v-123v: partly bound in disorder); prognostication for 1443 (117v-119v); Pierre d’Ailly, Vigintiloquium de concordia astronomice veritatis cum theologia, excerpt (120r-120v); four horoscopes for the great conjunctions of 1425, 1357 and 1365 (125r); notes on the great conjunctions of 1425 and 1464 (126r); Messahallah, Epistola de rebus eclipsium (130r-132v); Astronomia Ypocratis (133r-137r); Alkindi (?), Saturnus in Ariete sub radiis… (137r-138v); Ptolemaica (138v-139r); Zael, Liber iudiciorum (139r-143v: Introductorium chs 18-22, Quinquaginta precepta and De interrogationibus chs 1-7); Robert Grosseteste, De impressionibus aeris (143v-147r); ‘De 15 stellis fixis. Stelle fixe que sunt de nature Saturni et Martis nocent…’, five first lines only (147v); ‘Omnia iudicia que secundum astronomiam feruntur…’ (148r-158v); Leopold of Austria, De astrorum scientia, excerpt from Book VI ‘Signa quoque humida sunt Cancer, Leo, Scorpio et Aquarius…’ (160r); Simon de Boesmare, medical, astrological and astronomical notes, in French and Latin (164r-183v); controversy regarding the making of a medical almanac at the faculty of medicine in Paris in 1437 ‘Super controversia mota inter venerabiles et discretos viros…’ (184r-211v); sequel of f. 1r-1v (212r-219v); fragment on the astrolabe (220r-220v); John of Eschenden, judgement on the great conjunction of 1365 (221r-227v); Simon de Boesmare, medical, astrological and astronomical notes, in French and Latin (229r-239v); text on the new quadrant, in French (240r-242r); description of the native of the seven planets, in French (242r-243r); text on the equatorium, incomplete (243v-247v); ‘Qui accesserit ad regem et Luna in Aquario non recipietur nec aliquo modo curabit rex…’ (248r-253v). Blank: 5v, 6v, 125v, 126v, 159, 160v-163v, 228, 254.

Bibl. Catalogus codicum manuscriptorum Bibliothecae Regiae, IV: Cod. Latini 7226-8822, Paris, 1744, 359; L. Thorndike, ‘Notes on Some Astronomical, Astrological and Mathematical Manuscripts of the Bibliothèque Nationale, Paris’, Journal of the Warburg and Courtauld Institutes 20 (1957), 112-172: 143-144; J.-P. Boudet, Lire dans le ciel. La bibliothèque de Simon de Phares, astrologue du XV^e siècle, Bruxelles, 1994, 113-151; J.-P. Boudet, T. Charmasson, ‘Une consultation astrologique princière en 1427’, in Comprendre et maîtriser la nature au Moyen Age. Mélanges d’histoire des sciences offerts à Guy Beaujouan, Paris, 1994, 255-278; J. R. Veenstra, Magic and Divination at the Courts of Burgundy and France. Text and Context of Laurens Pignon’s Contre les Devineurs (1411), Leiden-New York-Köln, 1997, 119-126; R. Lemay, Le Kitāb aṯ-Ṯamara (Liber fructus, Centiloquium) d’Abū Jaʿfar Aḥmad ibn Yūsuf [Ps.-Ptolémée], 1999 [unpublished], I, 422; D. Juste, Catalogus Codicum Astrologorum Latinorum, II: Les manuscrits astrologiques latins conservés à la Bibliothèque nationale de France à Paris, Paris, 2015, 162-167.