1. Medical and Chirurgical Review (MCR).
2. Medical and Physical Journal (MPJ).
3. The Spectator.
4. Akenside, Mark, The Pleasures of Imagination (London: R. Dodsley, 1744).
5. Bacon, Francis, Of the proficience and advancement of learning, divine and humane (London, 1605), quoted in Richard Hunter and Ida MacAlpine, Three Hundred Years of Psychiatry 1535–1860 (London: Oxford University Press, 1963), 80.