James Finlay Weir Johnston (1796–1855) Scottish agricultural chemist
Report of the First Meeting of the British Association for the Advancement of Science held at York in September 1831. By James F. W. Johnston, A. M. &c. &c. As found in David Brewster's The Edinburgh Journal Of Science. Vol. 8 https://archive.org/stream/edinburghjourna09brewgoog#page/n29/mode/2up, p. 29.