Jean de Nynauld was a French physician who wrote an important work on lycanthropy in 1615 titled De la lycanthropie, transformation et extase des sorciers (On lycanthropy, transformation and ecstasy of witches).Robbins, Rossell Hope. (1959) The Encyclopedia of Witchcraft and Demonology. London: Peter Nevill, p. 326. de Nynauld saw lycanthropy as a form of mental illness rather than a form of magic.Davidson, Jane P. (2012) Early modern supernatural: The dark side of European culture, 1400–1700. Santa Barbara: ABC-CLIO, p. 160.
A critical edition of the work, edited by Nicole Jacques-Lefevre and Maxime Preaud, was published by Frenesie in Paris, 1990. ()
References
External links De la lycanthropie, transformation et extase des sorciers. Scanned version from Real Academia de Medicina y Cirugía de Sevilla.