Letter from Dr Henry Miles and statement from Henry Horne to John Canton Letter of 2 August 1750 from Dr Henry Miles FRS to John Canton concerning an extraordinary rise in temperature, and a report of a meteor seen at Norwich the same month Statement of 15 February 1750/1 by Henry Horne respecting magnetic bars made by Mr Canton; the circular paper with a mark appears to have been affixed by De Morgan and to refer to his first communication to the Athenaeum 1750