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Vatican, Biblioteca Apostolica Vaticana, Ott. lat. 1826

s. XIII-XIV (f. 65-79, the rest of the MS dates from the middle of the 14^th c., except for 15^th-c. additions f. 39v-40v, 62-64, 79r, 86rb and 141-156).

Or.:

Italy (Italian hands acc. Pedersen; Genoa mentioned f. 46va-50vb; most of the 15^th-c. additions are by the same hand, which might be that of Beltramus of Sinna, cf. f. 86rb and 146r; Florence is also mentioned f. 86rb and 141r).

Parchment, 156 f., several hands, one of which copied f. 65-78.

Astronomy: canons of Toledan tables (1r-38v); tables of the Sun’s entry into the signs for 1440-1444 and 1448-1480 (39v-40v); John of Ligneres, Canones (41ra-46rb); canons of astronomical tables mentioning Genoa and the years 1332 and 1334 (46va-50vb); John of Ligneres, Canones primi mobilis (51ra-61va); almanac 1432-1467 (62r-62v); ‘Ad inveniendum veram coniunctionem et oppositionem Solis et Lune…’, with diagram (63v); astrology ‘De carestia (!) et fame vel habundantia et vilitate. Ptholomeus. Quando Iupiter fuerit in signo aquatico…’ (64r-64v); Ptolemaica (65r-78v); table ‘Motus planetarum et argumentorum in omni annali revolutionum…’ (79r); Alfonsine tables (80r-113r), with two added tables of planetary roots, one for Florence and the other for Siena in 1420 ‘per me Beltramum examinate’ (86rb); astronomical tables, partly by John of Ligneres (113v-140v); tables of conjunctions Sun-Moon 1393-1753 (141r-142r), with mention of Florence (141r); lists of eclipses 1428-1444 (142r); ascension tables for 48° (142v-143r); lunar tables (143v-144v); tables of lunar mansions (145r-145v); tables of planetary roots 1421-1468 ‘examinate per me Beltramum in civitate Senarum [Siena]’ (146r-147v); astronomical tables with canons (148ra-156va). Blank: 39r, 63r, 79v.

Bibl. Inventarii codicum manuscriptorum Latinorum Bibliothecae Vaticanae Ottobonianae (handwritten catalogue), II, 92v; L. Thorndike, ‘Notes upon Some Medieval Latin Astronomical, Astrological and Mathematical Manuscripts at the Vatican, Part II’, Isis 49 (1958), 34-49: 35-38; F. S. Pedersen, The Toledan Tables. A Review of the Manuscripts and the Textual Versions with an Edition, København, 2002, I, 177.

65r–⁠78v	‘Claudii Ptholomei mathematicorum Sintaxeos elmeruguisti capitula VII libri incipiunt. Quoniam fixe stelle eandem semper positionem conservant ad se invicem… [chapter index]. <P>ertranseuntes in ante hoc quod coordinatis, o Syre, et circa rectam et circa inclinatam speram contigentia — (78r) Que ultra cubitum Australis Chele: <Gradus longitudinis> Cancri XIX VI^a. <Gradus latitudinis> Not<us> II ter<tie> <Magnitudo> IIII^a.’ = Ptolemy, Almagesti (tr. Sicily c. 1150) (A.1.1) , Book VII, ending abruptly in the star catalogue with the sign of Cancer at the bottom of f. 78r and with an empty table on f. 78v. No glosses.

65r–⁠78v

‘Claudii Ptholomei mathematicorum Sintaxeos elmeruguisti capitula VII libri incipiunt. Quoniam fixe stelle eandem semper positionem conservant ad se invicem… [chapter index]. <P>ertranseuntes in ante hoc quod coordinatis, o Syre, et circa rectam et circa inclinatam speram contigentia — (78r) Que ultra cubitum Australis Chele: <Gradus longitudinis> Cancri XIX VI^a. <Gradus latitudinis> Not<us> II ter<tie> <Magnitudo> IIII^a.’

= Ptolemy, Almagesti (tr. Sicily c. 1150) (A.1.1)

, Book VII, ending abruptly in the star catalogue with the sign of Cancer at the bottom of f. 78r and with an empty table on f. 78v. No glosses.