By Michela Pereira (auth.), Piyo Rattansi, Antonio Clericuzio (eds.)

The current quantity owes its ongm to a Colloquium on "Alchemy and Chemistry within the 16th and 17th Centuries", held on the Warburg Institute on twenty sixth and twenty seventh July 1989. The Colloquium excited by a couple of chosen issues in the course of a heavily outlined chronological period: at the relation of alchemy and chemistry to medication, philosophy, faith, and to the corpuscular philosophy, within the 16th and 17th centuries. The relatives among Medicina and alchemy within the Lullian treatises have been tested within the beginning paper via Michela Pereira, according to researches on unpublished manuscript assets within the interval among the 14th and seventeenth centuries. it's numerous many years because the researches of R.F. Multhauf gave a well known function to Johannes de Rupescissa in linking drugs and alchemy in the course of the suggestion of a quinta essentia. Michela Pereira explores the importance of the Lullian culture during this improvement and attracts realization to the truth that the early Paracelsians had themselves well-known a kinfolk resemblance among the works of Paracelsus and Roger Bacon's scientia experimentalis and, certainly, a continuity with the Lullian tradition.

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Ad haec incipit ars proficere, ubi natura deficit, subtilem naturam in te inclusam detegere, et ipsam manifestare. Cum natura generat metalla, tincturas generare nequit, quamvis bene tincturam in se plenam occulte contineat. Unde Philosophus: Natura continet in se quibus indiget, et non perficitur, nisi moveatur arte et operatione. Quare in nostro opere ars non est aliud, quam adjuvamen naturae, quod patet in multis artium operibus Laicorum"; Liber de magni lapidis compositione et operatione, TC 3, p.

In lapide isto in occulto est caliditas et siccitas: et in manifesto frigiditas et humiditas: Oportet ergo nos occultare manifestum, et id quod est occultum. facere manifestum. IlIud autem quod est in occulto, scilicet caliditas et siccitas est Oleum: et istud oleum est siccum. . Illud quod est in manifesto frigidum et humidum, est fumus corrumpens. Oportet ergo quod frigidum et humidum recipiant caliditatem et siccitatem. quod erat in occulto. , p. 187: "hoc scire nos oportet, ut faciamus de manifesto occultum.

63 In Paracelsus's texts this link is underlined in all its universality. 64 The Paracelsian concept of magic is also linked to this way of interpreting the relation between the corporeal and the incorporeal. As one reads in Labyrinthus medico rum errantium, what this skill principally teaches is simply the interpretation of signs. When it is applied to the study of medicinal plants it is capable of identifying their invisible properties from their external appearance with far greater accuracy than if they were physically dissected.

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