Philosophical transactions
Philosophical Transactions is a 1665 scientific journal issued in London by the Royal Society of London, written for natural philosophers and early scientific readers. Its pictures are small engraved and pencilled plates: one shows a dark winding glacier-like line with hatched rock and a labelled measurement mark, the other a faint pencil sketch of a stone ledge or cliff edge, both useful to a designer for their fine hatching and simple technical linework.
