Parchment, IV+211 f., a single neat hand, richly decorated initials.

Mathematics and astronomy: table of contents, medieval (IIv); table of contents, medieval (IVr); Euclid, Elementa, version ‘Adelard II’ (1r-59v); Euclid, De speculis (60r-63v); Euclid, De visu (63v-72v); Jordanus de Nemore (?), Demonstratio de algorismo (72v-77r); Jordanus de Nemore (?), Demonstratio de minutiis (77r-81v); Gerard of Brussels, Liber de motu (81v-88v); Archimedes, De mensura circuli (89r-90r); Johannes de Tinemue, De curvis superficiebus (90r-94v); De quadratura circuli per lunulas (94v); Theodosius, Spherica, tr. Gerard of Cremona (94v-112v); Ptolemaica (114r-175v); Jordanus de Nemore (?), De proportionibus (175v-178v); Euclid, Data (178v-191r); Ptolemaica (191r); Alfraganus, De scientia astrorum, tr. John of Seville (194r-209r). Blank: 113r-113v (except added notes f. 113v), 191v-193v.

Note The second table of contents (IVr) includes items which are no longer in the MS (as noted by the author of the table: ‘Omnes isti deficiunt’) between current f. 112 and 114: ‘Quedam demonstrationes de speculis et figuris. Liber de occultis (?). De compositione astrolabii universalis Pthol<omei> [= Pseudo-Ptolemy, Liber de compositione universalis astrolabii (B.2)]. De practica geometri… (?). Item de astrol<abio?> quedam demonstrationes. De ponderibus.’

Bibl. G. Libri, Catalogue of the Extraordinary Collection of Splendid Manuscripts, Chiefly upon Vellum, in Various Languages of Europe and the East, Formed by M. Guglielmo Libri, The Eminent Collector, who is obliged to leave London in consequence of ill health, and for that reason to dispose of his Literary Treasures, London, 1859, 145-148 (no. 665); M. Folkerts, ‘Mittelalterliche mathematische Handschriften in westlichen Sprachen in der Berliner Staatsbibliothek. Ein vorläufiges Verzeichnis’, in Mathematical Perspectives. Essays on Mathematics and Its Historical Development Presented to Kurt-Reinhard Biermann on the Occasion of His 60^th Birthday, ed. J. W. Dauben, New York, 1981, 53-93: 71-72; M. Clagett, Archimedes in the Middles Ages, V, Philadelphia, 1984, 60-61; H. L. L. Busard, M. Folkerts, Robert of Chester’s (?) Redaction of Euclid’s Elements, the so-Called Adelard II Version, Basel-Boston-Berlin, 1992, I, 36-38; P. O. Kristeller, Iter Italicum, VI, London-Leiden, 1992, 497; H. Zepeda, The First Latin Treatise on Ptolemy’s Astronomy: The Almagesti minor (c. 1200), Turnhout, 2018, 59.