At some point during the last two years of his life, Robert Boyle dictated to his friend, Gilbert Burnet, Bishop of Salisbury, some notes on major events and themes in his career. Some of the information he divulged in these memoranda has become quite widely known because Burnet used it in the funeral sermon for Boyle that he delivered a month after his death, at St Martin's in the Fields on 7 January 1692. In addition, these notes were cited several (...) times by Thomas Birch in the ‘Life of the Honourable Robert Boyle’ that he prefixed to his edition of Boyle's collected works of 1744: he there describes his source as ‘Mr.Boyle'smemorandums of his own life, dictated by himself to BishopBurnet’.2 What has hitherto been virtually overlooked is that the manuscript of these notes, which is in Burnet's hand, survives among the Birch Papers in the British Library: it is this document—and particularly a substantial component of it which was publicized by neither Burnet nor Birch—that forms the starting point for this paper. (shrink)

In 1648, J. Marcus Marci of Prague anticipated two chief features of Isaac Newton's celebrated 1672 theory of light and color, namely that colors are inherent to light and that the role of the prism is to separate the rays of color by means of refraction. Furthermore, Marci argued that colors produced by a first refraction are immutable when subjected to refraction by a second prism. This paper argues that the key to Marci's achievement derived from his chymical view of (...) light, which he tested by means of prism trials and geometrical constructions. I also suggest that Marci's unusual coupling of chymical philosophy with mathematics was a move unusual in the history of alchemy; and that his chymical understanding of light belongs to an underexplored tradition in the history of optics, which is distinct from mechanistic and Aristotelian theories of light. (shrink)

Summary Robert Boyle is remembered largely for his integration of experiment and the ?mechanical philosophy?. Although Boyle is occasionally elusive as to what he means precisely by the ?mechanical philosophy?, it is clear that a major portion of it concerned his corpuscular theory of matter. Historians of science have traditionally viewed Boyle's corpuscular philosophy as the grafting of a physical theory onto a previously incoherent body of alchemy and iatrochemistry. As this essay shows, however, Boyle owed a heavy debt to (...) a longstanding alchemical theory that postulated the corpuscular make-up of metals and various reagents. I have elsewhere argued in a general way for Boyle's debt to alchemical corpuscular theory, but in the present essay I show one of his precise sources?namely the Wittenberg medical professor Daniel Sennert (1572?1637). In his youth Boyle wrote a treatise on corpuscularianism, Of the Atomicall Philosophy, that borrowed heavily from Sennert without acknowledgement. Later works, such as The Sceptical Chymist, elaborate on these borrowings. This discovery shows that we cannot view Boyle's corpuscular philosophy as an imposition of physics on chemistry: instead, it appears that it originally grew out of chemistry itself. The discovery also throws an interesting light on Boyle's attitude toward sources. (shrink)

This essay proposes that the well‐documented interest in empirical and experimental practice at the early modern German courts was not limited to male practitioners. Just as princes evinced an interest in practical alchemy, mathematics, and astronomy, a large number of gentlewomen became expert medical practitioners. Using a case study of one noblewoman, Electress Anna of Saxony, I would like to expand the notion of “prince‐practitioning” to a more general and inclusive “court experimentalism.” Like the prince‐practitioners, Anna engaged in a laborious (...) attempt to learn the hands‐on techniques involved in becoming an expert; she collaborated with both noblewomen and noblemen in her efforts; and she semantically linked her medicine to the alchemical skills practiced by her husband, Elector August. Although court experimentalism cannot be equated with experimentation in the modern sense, medicine is one area in which women actively shared in the early modern fascination with empirical knowledge. (shrink)