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1785 |
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(1785): Houdon scultps a bust of Lavoisier.
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(1785): Lavoisier become director of the Académie des sciences.
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(1785-01) (1785-02-12): Further preparation for the large scale experiment on decomposition and recomposition of water. Tests and calibration of of the gasometers.
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(1785-01-22): At the Académie "M. Lavoisier a lu un Mémoire sur la dissolution des métaux par les acides." First in a series of memoirs with decisive attacks on phlogiston. Reading completed 26 February.
P-V, 1785, fol. 13.
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(1785-02-15): Lavoisier's Mémoire sur les altérations qui arrivent à l'air dans plusieurs circonstances… is read before the Société Royale de Médecine. Based on his memoir read to the Académie on April 9, 1777.
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(1785-02-16): At the Académie Lavoisier requests commissioners to observe his experiment on water. The entire class of chemistry is appointed, plus Saron, Brisson, Bailly, Laplace, Monge and the duc de la Rochefoucauld.
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(1785-02-27) (1785-02-28): Decomposition of water: beginning of the great experiment performed before the Académie's commission. Quantitative data on water decomposed and gases formed. Followed by recomposition of the gases in a weighed flask.Second exper
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(1785-03-01): Series of experiments on the recomposition of water. Weighing of water formed and of the desiccating tube through which the gases pass. Examination of unreacted gases in the chamber.
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(1785-03-02): At the Académie Lavoisier reads his Mémoire sur l'affinité du principe oxygine. Had been recorded December 20, 1783, reading completed March 5, 1785.
P-V, 1785, fol. 46.
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(1785-03-07): Chemical tests and calculations relating to the experiments of February 27-28.
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(1785-03-09) (1785-03-12): Signed certificates by the commissioners based on the notes they had taken during the course of the water experiment.
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(1785-03-16): "M. Monge a présenté à l'Académie l'eau qu'il a obtenue par la combustion de l'air inflammable et de l'air vital; les memes commissaires que pour l'expérience de M. Lavoisier."
P-V, 1785, fol. 51.
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(1785-04-10): At the urging of Lavoisier, then Director, the Académie names an extraordinary commission to study reforms of its structure.
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(1785-04-23): Ratification of the reforms of the Académie's structure. The "réglement" had been drawn up by Lavoisier himself.
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(1785-04-29): Preparation of oxygen. Action of sulphuric acid on manganese, and continued heating to decompose the sulphate. Repeated the 9, 14 and 16 May.
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(1785-05-07): Cadet, Darcet and Lavoisier report favorably on Pelletier's memoir on dephlogisticated marine acid although it employs phlogistic concepts.
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(1785-05-07): Combustion of spirit of wine and of olive oil to determine their compositions. Data for spirit of wine are recalculated on July 5, 1788.
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(1785-05-18): Combustion of sulphur. Most of the these combustion experiments were described in the Mémoire sur la combinaison du principe oxygène avec l'espirt de vin.
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(1785-05-30) (1785-06-10): Experiments on alcoholic fermentation.
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(1785-06-09): A notice by Lavoisier on the Académie de sciences, describing its recent reorganization, appears on the Journal de Paris.
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(1785-06-15): At the Académie "M. Lavoisier a lu un Mémoire sur la décomposition du nitre par le charbon, imprimé dans le tome des Savants étrangers." Lavoisier announces his repetition of Cavendish's experiments relating to combination of nitrogen and ox
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(1785-06-16): First meeting of the Comité d'administration d'agriculture at the home of Vergennes.
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(1785-06-23): Second meeting of the Comité d'agriculture. Lavoisier presents a report on the organization of the Comité.
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(1785-06-28): At the Académie "M. Lavoisier a lu des Réflexions sur le phlogistique!" Reading finished July, 13. Decisive attack against phlogiston, sums up his result published up to that time as evidence against Stahl's theory and as a reply to criticis
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(1785-07-16): Letter from Meusnier de la Place to design of a building in which a large aerostatic machine is to be built.
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