1. Elias Ashmole, Theatrum Chemicum Britannicum (London, 1652).
2. See Frances Yates, The Rosicrucian Enlightenment (London, New York: Routledge, 1972).
3. Allen G. Debus (ed.), Robert Fludd and His Philosophicall Key being a Transcription of the manuscript at Trinity College, Cambridge (New York: Science History Publications, a division of Neale Watson Academic Publications Inc., 1979), introduction, p. 6.
4. See Lawrence M. Principe, The Aspiring Adept: Robert Boyle and His Alchemical Quest (Princeton, N.J.: Princeton University Press, 1998).
5. See Betty Jo Teeter Dobbs, Alchemical Death and Resurrection: The Significance of Alchemy in the Age of Newton (Washington, D.C.: Smithsonian Institute Libraries, 1990); and The Janus Face of Genius: The Role of Alchemy in Newton’s Thought (Cambridge: Cambridge University Press, 1991).