El Escorial, Real Biblioteca de San Lorenzo, &. I. 3. Century 11 Precise date 1047 Language Latin Material Membr. Height × width 352 x 255 No. of leaves 243 Type of writing littera visigotica Printed catalogs A. Cordiolani, "Les manuscrits de comput ecclésiastique," Cuidad de Dios 163 (1951) 284-5; G. Antolín, Catálogo de los códices latinos II (1911) 331-4 Source Cordiolani (1951) Type of source cat. Source’s source insp. Work 1Author standard Isidorus Title (standard) Etymologiae Work 2Author standard Beda Title (standard) De natura rerum (exc.) Contents capitula 34 (De caelo vel quinque circulis ejus), 11 (De signis et lumine stellarum), 13-15 (De septem planetis), 16-17 (De signifero), 16 (finis) (De signis mensium duodecim), 27 (De lune cursu per signa), 28 (De lune discursu si quis signa ignorat) Folio no. 234-9 Work 3Author standard Beda Title (standard) De temporum ratione (exc.) Contents capitulum 11 Incipit Menses dicti a mensura qua quisque eorum mensurus est, sed melius a luna quae graeco sermone mene vocatur Printed copies Migne PL 90, 341-346 Folio no. 237v Rubric VIII. De mensibus anni et ratione bissexti
