Ars Sphygmica seu pulsum doctrina
Ars Sphygmica seu pulsum doctrina is a 1602 Latin treatise on the pulse by Joseph Struss, printed at Basel by Ludwig König for medical readers. Its pictures are plain black-and-white letterpress diagrams: circles joined by crossing lines, with Latin text set along the diagonals, a layout a designer could borrow for a schematic chart or flowchart.
