Boethius: De arithmetica (fragment)
A medieval manuscript fragment of Boethius's arithmetic treatise, dating from around 950, held in a Swiss library and likely copied for monastic or scholarly readers. The picture shows orange-ruled diagrams of triangular, square and house-shaped arrays of dots and numerals, with Latin text above. A designer could take from it the rhythm of repeated geometric units arranged in rows, and the pairing of marginal ink lettering with simple diagrammatic forms.
