61. Harley MS 1, ff 17r-18v Reference (shelfmark): Harley MS 1, ff 17r-18v Title: Thebit ben Corat, De figura sectore Scope & Content: Thebit ben Corat, De figura sectore. Decoration: Geometrical diagrams in ink (ff. 17r-18v). Collection Area: Western Manuscripts Languages: Latin Date Range: 3rd quarter of the 13th century Extent: 2 folios.
62. Harley MS 1, ff 19r - 22r Reference (shelfmark): Harley MS 1, ff 19r - 22r Title: Thebit ben Corat, De anno solis Scope & Content: Thebit ben Corat, De anno solis, in the Latin translation by Gerard of Cremona. Decoration: Geometrical diagrams in ink (ff. 19v, 20r, 20v, 21v). Collection Area: Western Manuscripts Languages: Latin Date Range: 3rd quarter of the 13th century Extent: 4 folios.
63. Harley MS 1, ff 24r-30v Reference (shelfmark): Harley MS 1, ff 24r-30v Title: Albumasar, De floribus astrorum Scope & Content: Albumasar, De floribus astrorum, in the Latin translation probably by John of Seville. Collection Area: Western Manuscripts Languages: Latin Date Range: 3rd quarter of the 13th century Extent: 6 folios.
64. Harley MS 1, ff 31r-40v Reference (shelfmark): Harley MS 1, ff 31r-40v Title: Albumasar, De revolutionibus annorum Scope & Content: Albumasar, De revolutionibus annorum, in the Latin translation probably by John of Seville. Collection Area: Western Manuscripts Languages: Latin Date Range: 3rd quarter of the 13th century Extent: 10 folios.
65. Harley MS 1, ff 41r-46v Reference (shelfmark): Harley MS 1, ff 41r-46v Title: Practica geometriae Scope & Content: Includes the 'Practica geometriae', incipit: 'Artis cuiuslibet consummatio'. Decoration: Geometrical diagrams in ink (ff. 41r-43v, 44v). Collection Area: Western Manuscripts Languages: Latin Date Range: 3rd quarter of the 13th century Extent: 6 folios.
66. Harley MS 1, ff 47r-55v Reference (shelfmark): Harley MS 1, ff 47r-55v Title: Petrus Philomena de Dacia, Expositio super Algorismum Iohannis de Sacro Bosco Scope & Content: Petrus Philomena de Dacia, Expositio super Algorismum Iohannis de Sacro Bosco. Collection Area: Western Manuscripts Languages: Latin Date Range: 1st quarter of the 14th century Extent: 14 folios.
67. Harley MS 1, ff 55v-63v Reference (shelfmark): Harley MS 1, ff 55v-63v Title: Robert the Englishman, Commentary on Iohannes de Sacro Bosco, Tractatus de sphaera Scope & Content: Robert the Englishman, Commentary on Iohannes de Sacro Bosco, Tractatus de sphaera. Collection Area: Western Manuscripts Languages: Latin Date Range: 1st quarter of the 14th century Extent: 9 folios.
68. Harley MS 1, ff 64r-70v Reference (shelfmark): Harley MS 1, ff 64r-70v Title: Commentary on Iohannes de Sacro Bosco, Computus. Scope & Content: An anonymous commentary on Iohannes de Sacro Bosco, Computus, incipit: 'Computus est scientia etc.' Collection Area: Western Manuscripts Languages: Latin Date Range: 1st quarter of the 14th century Extent: 8 folios.
69. Harley MS 1, ff 70v-79v Reference (shelfmark): Harley MS 1, ff 70v-79v Title: William of Aragon, Commentary on pseudo-Ptolemy, Centiloquium Scope & Content: William of Aragon, Commentary on pseudo-Ptolemy, Centiloquium. Collection Area: Western Manuscripts Languages: Latin Date Range: 1st quarter of the 14th century Extent: 10 folios.
70. Harley MS 1, ff 79v-80v Reference (shelfmark): Harley MS 1, ff 79v-80v Title: Ars algorismi de fractionibus Scope & Content: Ars algorismi de fractionibus', incipit: 'Certificatur quandoque totum per partes... Collection Area: Western Manuscripts Languages: Latin Date Range: 1st quarter of the 14th century Extent: 2 folios.