Letter from Joseph Prestwich, to George Gabriel Stokes, regarding a paper 'On the origin of the parallel roads of Lochaber and their bearing on other phenomena of the glacial period' by Joseph Prestwich Has been in touch with Walter White, as the rough sketches will require drawing up by the artist, who will also require further instruction after the size has been reduced from the Ordnance Survey. Will soon be travelling to France and will not return until October. Subject: Geology [Published in the Philosophical Transactions of the Royal Society, 1879] 11 September 1879