[Mathematical treatise]
A manuscript mathematical treatise attributed to Nicholas Saunderson, 1682-1739, dated 1747, held by the Smithsonian Libraries and Archives, with handwritten text in columns beside ruled geometric diagrams. The pages show hand-drawn triangles, semicircles, parabolic curves and labelled construction lines in brown ink on cream paper. A designer could take the sparse, precise linework and the annotated figure-plate layout as a model for technical diagrams with minimal ornament.
![Picture 1 of 2 from [Mathematical treatise] (1747), leaf 91](https://img.insideoutlibrary.com/img/200/ia-mathematicaltre00saun-91-0.webp)
![Picture 2 of 2 from [Mathematical treatise] (1747), leaf 197](https://img.insideoutlibrary.com/img/200/ia-mathematicaltre00saun-197-0.webp)