Nicolas Lemery | |
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Born | 17 November 1645 |
Died | 19 June 1715 69) | (aged
Nationality | French |
Known for | Acid-base bonding model |
Scientific career | |
Fields | chemistry |
Nicolas Lémery (or Lemery as his name appeared in his international publications) (17 November 1645 – 19 June 1715), French chemist, was born at Rouen. He was one of the first to develop theories on acid-base chemistry.
After learning pharmacy in his native town he became a pupil of Christophe Glaser in Paris, and then went to Montpellier, where he began to lecture on chemistry. He next established a pharmacy in Paris, still continuing his lectures, but following 1683, being a Calvinist, he was obliged to retire to England. In the following year he returned to France, and turning Catholic in 1686 was able to reopen his shop and resume his lectures. He died in Paris on 19 June 1715. [1]
Lemery did not concern himself much with theoretical speculations, but holding chemistry to be a demonstrative science, confined himself to the straightforward exposition of facts and experiments. In consequence, his lecture-room was thronged with people of all sorts, anxious to hear a man who shunned the barren obscurities of the alchemists, and did not regard the quest of the philosopher's stone and the elixir of life as the sole end of his science. Of his Cours de chymie (1675) he lived to see 13 editions, and for a century it maintained its reputation as a standard work. [1]
In 1680, using the corpuscular theory as a basis, Lemery stipulated that the acidity of any substance consisted in its pointed particles, while alkalis were endowed with pores of various sizes. [2] A molecule, according to this view, consisted of corpuscles united through a geometric locking of points and pores.
His other publications included Pharmacopée universelle (1697), Traité universel des drogues simples (1698), Traité de l'antimoine (1707), together with a number of papers contributed to the French Academy, one of which offered a chemical and physical explanation of underground fires, earthquakes, lightning and thunder. He discovered that heat is evolved when iron filings and sulfur are rubbed together to a paste with water, and the artificial volcan de Lemery was produced by burying underground a considerable quantity of this mixture, which he regarded as a potent agent in the causation of volcanic action.
His son Louis Lémery (1677–1743) was appointed physician at the Hôtel-Dieu de Paris in 1710, and became demonstrator of chemistry at the Jardin du Roi in 1731. He was the author of a Traité des aliments (1702), and of a Dissertation sur la nature des os (1704), as well as of a number of papers on chemical topics. [1]
Ferdinand Berthoud, was a scientist and watchmaker. He became master watchmaker in Paris in 1753. Berthoud, who held the position of Horologist-Mechanic by appointment to the King and the Navy, left behind him an exceptionally broad body of work, in particular in the field of marine chronometers.
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Jean Boisard was a learned Frenchman, who died around 1725. His birth date is not known. He is considered to be one of founders, in the 17th century, of numismatics, the science or specialized knowledge and collection of medals and coins. He was Counsellor at the French royal “Cour des Monnaies”. In 1692, he published a short treatise on coins, entitled “Traité des Monnaies, de leurs circonstances et dépendances”. In his book, very precise and accurate details were given on alloy and on manufacturing secrets. As a result, the government forbade its circulation, being afraid that it could be used as a guidebook for counterfeiters. There are still some rare copies available, which are consulted by contemporary specialists of numismatics.
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Jean Grancolas was a theologian, liturgist and doctor of the Sorbonne.
Having received the degree of Doctor of Theology of the faculty of Paris in 1685, he became chaplain to the brother of Louis XIV. He pronounced the funeral oration of this prince, but his panegyric displeased the son of the deceased, the Duke of Orléans, future Regent of France, who dismissed him from his house. His unfortunate essay caused Grancolas to abandon official eloquence, and, having devoted much time to studying liturgical ceremonies and comparing the various usages with the text of the ancient writers who have given an account of them, he undertook to communicate to the public his observations on this head. His first work dealt with the antiquity of the ceremonies of the sacraments. The favourable reception accorded this endeavour led Grancolas to publish the next year a study of the custom of dipping the consecrated bread in the wine. However, the author was desirous of participating in less severe questions, and wished to engage in theological polemics. At that time the matter of Quietism was creating a great stir in the world, and Grancolas conceived the idea of plunging into the quarrel by a refutation of the heresy which he entitled "Le Quiétisme contraire au doctrine des sacrements", and which appeared in 1693.
This work contains a history of the life, doctrine, and condemnation of Molinos. Grancolas herein sets forth the principles of the Spanish mystic and of his followers, which principles he proceeds to refute from Scripture and the tradition of the Fathers. This new work attracted little attention, and shared the fate of so many other theological demonstrations called forth by the Quietist heresy and scarcely remembered to-day. However from his own point of view, Grancolas is master of his subject and handles it firmly, but he displays the usual qualities and defects found in his other works, namely, an erudition of the first order derived from original sources, a profound and wide acquaintance with the question he treats and germane topics, a too evident rudeness of expression and lack of culture, as well as an obvious disdain for composition.
His works offend chiefly in this last particular. Grancolas scarcely took the trouble to arrange and connect the points of an argument, being satisfied to throw them into a heap, and deprived them by this disorder of a part of their monstrative value. Despite these defects all works of Grancolas retain their value as books of reference. His collections of texts do not do away the necessity of having recourse to originals although the translations he gives are generally exact and very clear, but he is useful, inasmuch as he omits nothing essential and also, if necessary in determining the sense of a word. An original mind, he belongs to the theological school of Thomassin and Petau who readily replace discussion by the exposition of traditional opinions in chronological order, but he scarcely troubles to develop the sense of his texts. His real originality is as a liturgist, although even here he does not rise above the second rank. Ingenious without being systematic, imaginative without being adventurous, the commentary in most of his works is valuable, especially in the "Ancien sacramentaire de l'Eglise" and in the "Commentaire sur le Bréviaire romain".
His principal writings are: "Traité de l'antiquité des cérémonies des sacrements" ; "De l'Intinction ou de la coutume de tremper le pain consacré dans le vin" ; "Le Quiétisme contraire à la doctrine des sacrements" ; "Instructions sur la religion tirées de l'Ecriture sainte" "La Science des confesseurs ou la manière d'administrer le sacrement de Pénitence" ; "Histoire de la communion sous une seule espèce, avec un Traité de la concomitance, ou de la Présence du Corps et du Sang de Jésus Christ sous chaque espèce" ; "L'ancienne discipline de l'Eglise sur la Confession et sur les pratiques les plus importantes de la Pénitence" ; "Heures sacré
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