This manuscript contains a set of poems by James Nicholas of Denmark (he flourished c.1360-73) written in 1363 in honour of Aymer of Valence, Earl of Pembroke (d.1324), whose widow Marie was Nicholas's patron, and founder of Pembroke College, Cambridge. On a flyleaf it has a late medieval ownership inscription (partly erased) of the College. This diagram, headed '22nd Metre', contains a poem laid out in a square grid to emphasise the poetic structure. The first line is read across the top; the second line is read diagonally from the upper left to the lower right corner; the third line is read vertically down the left-hand side; the fourth is read along the bottom; the fifth is read diagonally from the lower left to the upper right corner; and so on. This makes clear that the first word of the first three lines is the same ('Mors'), the last word of the first and fourth lines is the same ('anxietate'), and so on.