Title: A treatise on the nature and property of fire. In three essays. I. Shewing the cause of vitality, and muscular motion; with many other Phaenomena. II. On electricity. III. Shewing the mechanical cause of magnetism; and why the Compass varies in the Manner it does. By John Freke, Surgeon to St. Bartholomew's Hospital, London, and F.R.S.