The Codex Sangallensis 250 is a manuscript which was compiled in the latter half of the 9th century at the Abbey library in St. Gallen, where it remains today. It is an astronomical and computistical, 645-page-long encyclopedia written in Latin. The pages are made of parchment with a height of 24.7 cm and a width of 18 cm. The text was structured in a single column, with approximately 23 or 24 lines per page. It was mostly written in Carolingian minuscule, though the titles were either in rustic capitals or uncial script.[1]
Both the texts and the illustrations in the codex were created by multiple scribes, as can be seen by the differing handwritings and drawing styles.[2] The manuscript was most likely compiled under the supervision of Notker Balbulus during his time as a librarian, and the margins of page 28 feature some glosses written by him.[3]