5: Chemistry and chemical technology: part 2: Spagyrical
discovery and invention: Magisteries of gold and immortality, London, Cambridge University Press, 1974.
As Lydwine's spagyrical
transformation replaces black flesh with clean spirit, she disappears as herself and returns as her beneficiaries.
Needham states the Japanese enthusiastically embraced "chemo-therapeutic" elements of Chinese alchemy and spagyrical
arts, with the attendant legends of immortals deep in the mountains, flying through the air, and abstaining from cereal foods.
Boyle and Newton drew on a well-developed experimental tradition and corpuscular matter theory derived from thirteenth-century Aristotelian alchemy and fused with Paracelsian spagyrical
methods: it was seventeenth-century alchemy and iatrochemistry that provided them with the materialist theoretical basis and quantitative experimental methods on which to develop a replacement for Aristotle's substantial forms, not the Cartesian clockwork mechanism and Gassendian atomism.