University of Virginia Library

EPILOGUE

If the chemical philosophy seemed a plausible alternative to the work of the mechanical philosophers in the middle decades of the seventeenth century, this alternative did not remain a viable one for long. The impressive results of the mechanists-culminating in the Principia mathematica of Isaac Newton (1687)-stamped on "respectable" natural philosophy the mathematical abstraction of the new physics. And yet, this is not to say that alchemical thought died after a final flowering in the sixteenth and the seventeenth centuries. The collection of manuscripts at King's College, Cambridge leaves little doubt that Isaac Newton was passionately concerned with the traditional problems of transmutation. Furthermore, recent research indicates that Newton's alchemical speculations may have been instrumental in the crystallization of some of his more acceptable concepts of physics. Similarly, Robert Boyle was influenced by alchemical thought. He published on the degradation of silver and his theoretical views were strongly influenced by his early reading of van Helmont. However, it is possible to go beyond these examples. Alchemical works were written by the important practical chemist, Johann Rudolf Glauber and the medical chemistry of the Renaissance alchemists found a new proponent in the revision of Franciscus Sylvius de la Böe whose work went through numerous seventeenth-and eighteenth-century editions. In like manner many elements of Paracelsian chemistry were retained in somewhat altered form in the texts of the eighteenth-century phlogiston chemists. At the same time the German revival of alchemy and Rosicrucianism stimulated a new interest in earlier interpretations of a vitalistic and mystically oriented universe. The impact of this on the growth of the nineteenth-century Naturphilosophie has yet to be assessed.

Many characteristic themes of alchemical thought and style are present in the earliest texts that have survived. Both the secrecy and the practical recipes of the metallic craft tradition are evident in the works of the late Hellenistic authors dating from the late third and the fourth centuries A.D. The allegorical and symbolical style of later alchemical works is also present here, and this is a reflection of the mystical tenor of the current philosophies and religions of the late Empire. The medical theme is absent in the Greek tradition and this seems to have been derived from Eastern sources. First found in Chinese alchemical works emphasizing the lengthening of life and the search for immortality, medical alchemy was integrated first into Islamic and then into Western alchemy and medicine.

There is little doubt that alchemy, understood in its broadest sense as a chemical key to nature, played a significant role in the development of the Scientific Revolution. The claim that this mystical science should replace the Aristotelianism and Galenism of the schools was looked on with dismay by early seventeenth-century mechanists who were forced to clarify their own views in their attacks on authors such as Paracelsus and Robert Fludd. At the same time, however, the chemical and alchemical call for a new science based on new observations in nature was important in a period that witnessed an ever-lessening adherence to scholastic authority. Finally, the Paracelsian and iatrochemical adoption of the primary goal of the medical alchemy of the Middle Ages resulted in the permanent acceptance of chemistry as a legitimate tool of the physician and the pharmacist.