English: Diagrams, In A Volume Of Treatises On Natural Science, Philosophy, And Mathematics. "This manuscript is typical of the sort of book owned by medieval university students: its contents are academic, it is small and easily portable, the text is written in small cursive script, and with minimal decoration. On a flyleaf is a partially erased inscription, recording that it was given by a university graduate to an Oxford school; a later medieval inscription records its ownership by Holy Trinity collegiate church at Tattershall, in Lincolnshire. These diagrams illustrate the text in a treatise on Mensuration (a branch of geometry that deals with the measurement of lengths, areas, and volumes) and elementary trigonometry, all involving squares whose sides are 12 units long." [1] The text on mensuration and elementary trigonometry, De rerum mensuratione, is found on folios 152r-155v.[2]