1. Harley MS 531, ff 134v-138v Reference (shelfmark): Harley MS 531, ff 134v-138v Title: Alkindus (al-Kindi), De mutatione temporum Scope & Content: Alkindus (al-Kindi), De mutatione temporum, here attributed to Dorotheus and listed as the 'Tractatus de imbribus et pluviis' in the table of contents. Decoration: Initials in blue. Collection Area: Western Manuscripts Languages: Latin Date Range: Mid 15th century Extent: 5 folios.