THE CHEMICAL REVOLUTION and PHARMACY: a DISCIPLINARY PERSPECTIVE Jonathan Simon
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THE CHEMICAL REVOLUTION AND PHARMACY: A DISCIPLINARY PERSPECTIVE Jonathan Simon To cite this version: Jonathan Simon. THE CHEMICAL REVOLUTION AND PHARMACY: A DISCIPLINARY PER- SPECTIVE. Ambix, Maney Publishing, 1998. hal-01867749 HAL Id: hal-01867749 https://hal.univ-lorraine.fr/hal-01867749 Submitted on 4 Sep 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. THE CHEMICAL REVOLUTION AND PHARMACY: A DISCIPLINARY PERSPECTIVE. By Jonathan Simon, Université de Lorraine. This article was published in Ambix, March 1998 Vol. 45, no. 1: pp. 1-13. INTRODUCTION. What was the chemical revolution? This question lies at the heart of the historiography of eighteenth-century chemistry and animates the present paper. The orthodox response has placed Lavoisier at the center of an intellectual transformation, characterising him as both the author of the revolution and the founder of modern chemistry. For those who want to focus the credit on Lavoisier, the chemical revolution consists in his supplanting Stahl's phlogiston theory with the substantially correct oxygenic view of combustion. With this 'paradigm shift', the story goes, Lavoisier took a vital step forward in the development of modern chemical theory. The twin advantages of this view of the chemical revolution are philosophical and pedagogical, or, in other words, such a revolution is both easily thought and easily taught. Indeed, the most widely disseminated version of this intellectual revolution is that found in Thomas Kuhn's The Structure of Scientific Revolutions, a philosophical treatise written by a historian of science. Furthermore, Kuhn learned this version of the chemical revolution from James Bryant Conant whose most fully developed presentation on the subject was intended specifically to educate humanities students in the sciences.1 Here, I want to approach the question from a disciplinary perspective, focussing on the relationship between chemistry and pharmacy in order to see what new insights this might provide concerning the nature of the chemical revolution. Although many pharmacists feature prominently in the history of chemistry, pharmacy itself occupies at best a marginal position in this discipline and as a corollary has an even less significant presence in general histories of science. From the point of view of a twentieth-century scientist, this might seem natural; after all, the history of chemistry should be about chemistry, and pharmacy is not chemistry. Although I do not intend to argue the case fully here, I believe that this way of 1 thinking, which conceives of chemistry and pharmacy as distinct disciplines, was first clearly formulated in the eighteenth century and only became pervasive during the nineteenth.2 Instead, what I do want to argue here is that the rejection of chemistry's former associations, if not identity, with pharmacy forms an important feature of the new chemistry developed by Lavoisier and his disciples. Moreover, I contend that this disciplinary perspective should be integrated into our view of the chemical revolution, thereby moving historians of chemistry beyond the restrictive confines of disembodied intellectual history.3 Overall, I would argue that it makes more sense to conceive of the chemical revolution as a multi-facetted transformative process rather than as a single intellectual event.4 First, such a view allows us to begin to comprehend the origins of the immensely successful nineteenth-century chemistry, a science built on an expanding institutional base and a growing self-assurance in its ability to intervene usefully in the various chemical arts and industries. Furthermore, the social and institutional dimensions encompassed by this approach should facilitate the historian's task of situating a changing population of chemists as they took advantage of the new disciplinary opportunities that developed in France at the end of the eighteenth century. Therefore, in exploring the growth of chemistry as an independent discipline, it is important to take into account not only the evidence of reconceptualization displayed in the contemporary texts but also the more substantial institutional context that affected the working lives of the various groups of chemists, an area too often neglected in the history of science. In this paper, I will be concentrating my analysis on the textual tradition that charts the disciplinary split between chemistry and pharmacy, but this should not be taken as a measure of its importance compared to the dramatic institutional developments in French chemistry at the end of the eighteenth century. 1. SEVENTEENTH-CENTURY FRENCH CHEMISTRY. If we concentrate solely on chemistry texts written in France towards the end of the eighteenth century, the intimacy of the relationship between pharmacy and chemistry is not particularly striking. Pharmacy, when mentioned at all, is usually given a marginal position in the texts, and is fully subjugated to philosophical chemistry conceived of as an 2 independent, albeit practical science. Nowhere is this clearer than in the works of Lavoisier himself, which I will discuss more fully in what follows. If we turn back to French chemistry in the seventeenth century, however, we find a science whose dominant purpose was the preparation of medicaments. At this time, chemistry was considered an inseparable part of pharmacy. Moreover, France produced a distinguished series of chemistry textbooks, whose authors built on one another's work to establish a major European scientific tradition. Their names are well known to historians of chemistry: Lefebvre (1615-1669), Glaser, and probably the best-known, Nicolas Lemery (1645-1715). All these men wrote treatises on chemistry, but it is enough to look through these works to see that their principal goal was to instruct pharmacists in how to prepare the medicaments that were needed to fill the physicians' prescriptions. The texts were written summaries of courses that the authors offered in person, serving to supplement the deficiencies of a pharmacist's education as an apprentice, or simply to refresh his memory. Lemery first published his Cours de chymie (Course of Chymistry) in 1675, and, according to Fontenelle, it 'sold like a Work of Gallantry or Satire. The Editions followed each other almost yearly, without counting the great number of counterfeit Editions, honorable & pernicious for the Author'.5 Prior to Macquer's publications in the middle of the eighteenth century, Lemery's remained the French textbook in chemistry. What has earned Lemery a particular place in the history of chemistry, however, is his application of corpuscular theory, as he explicitly introduced the mechanistic explanations of Descartes and Gassendi into the realm of chemistry. Too often historians dwell on this aspect of Lemery's work and give the impression of a theoretical chemist producing a corpus similar to that of Robert Boyle. The Course of Chymistry was not, however, a text that dealt primarily in what we could interpret as the theory of chemistry. Lemery's celebrated corpuscular speculations played a secondary role to the practical preparations that provided useful medicines. The full title of the work; A Chemistry Course containing the way in which to perform the operations that are in use in Medicine, by means of an easy method, with the reasoning about each operation, for the instruction of those who want to apply themselves to this science, shows that Lemery had made no attempt to disguise the fact that the work was firmly in the 3 pharmaceutical tradition.6 The principal aim of the course is manifest in the text as well as the title; it was to give the reader information on how to prepare certain 'mixts' - mineral, vegetable and animal - and how to use them in the treatment of illnesses. The preparation of the red precipitate of mercury is quite typical of the book's contents. Red precipitate. Take eight ounces of Mercury revived out of Cinnabar, dissolve it in a sufficient quantity of Spirit of Niter, which is nine or ten ounces; pour the dissolution into a viol or Matrass with a short Neck, set it on Sand, and evaporate all the moisture over a gentle heat, until there remains a white Mass; then drive the fire by little and little to the third Degree, and keep it in this condition till all your matter is turned Red, then take it off the fire, let the Viol cool, and break it to get your Precipitate, which weighs nine ounces.7 Although the technology and terminology would have to be updated, this would pass for a practical preparation of mercuric oxide in an introductory twentieth-century inorganic chemistry textbook.8 To leave the entry at this, however, would be to miss the point of the exercise. For Lemery, the preparation of the red precipitate of mercury found its justification in its medical use. It is a good Escarotick, it eats proud flesh; it is used for the laying open of Chancres mixt with burnt Alom, ãgyptiacum, and the common Suppurative. Some do give it inwardly to four grains for to raise a Flux, but this is a dangerous undertaking, unless that Rectified Spirit of Wine be burnt two or three times upon it.9 Setting to one side the corpuscular explications of how certain of the reactions proceed, Lemery's Course of Chymistry was at base a recipe book for those who wanted to prepare medicines in order to treat the sick. In the posthumous eighteenth-century editions, ThÚodore Baron added a useful index allowing the reader to look up the preparations according to the disease to be treated.