| Description | James Watt jr. has added: 'drawn up by Gregory Watt for Mr W. Withering. Oct. 1798.'; see a letter from William Withering jr. (The Larches) to James Watt jr. (------), 14 November 1804, where he says that he is sending G[regory]'s essay on the mineralogy of Cornwall. [Finding No. MS 3219/6/2/W/359] |