Philosophical transactions of the Royal Society of London
The Philosophical Transactions of the Royal Society of London, published in London by the Society from 1665, was a learned periodical for natural philosophers and scientific readers, here represented by copperplate diagrams of optical ray paths, apparatus and instrument layouts. The pictures are plain engraved line drawings with lettered points, labelled rays and no shading, which a designer could draw on for schematic diagrams, technical line work and scientific figure styling.
