Descriptions of the Arts and Trades

Descriptions des Arts et Métiers, faites ou approuvées par messieurs de l'Académie Royale des Sciences (French for "Descriptions of the Arts and Trades, made under the direction of the gentlemen of the Royal Academy of Sciences"), is a collection of books on crafts that was published by the Parisian Royal Academy of Sciences between 1761 and 1788. The full series comprises 113 folio volumes along with three supplements, and provide detailed accounts of a wide range of handcraft and manufacturing processes carried out in France at that time. The volumes are well-illustrated, with precise engravings by Jean Elie Bertrand (1737–1779) a noted typographer from Neuchâtel, where the printing was done. Many of them provide the background for shorter articles in Diderot's Encyclopedia, which was appearing at much the same time.

The project had its origin in request from Colbert in 1675 to the Academy Royal des Sciences for detailed accounts of various mechanic arts to be prepared and for new machines to be reported upon. This led to the formation of the Bignon Commission under Abbé Bignon. René-Antoine Ferchault de Réaumur (1683–1757) became editor soon after he joined the Academy. He inherited number of drawings (the earliest prepared in 1693) and an illustrated manuscript on printing, type and book binding, which had been prepared in 1704. It was left to Réaumur's successor Duhamel du Monceau to bring about the publication of the series, probably as the result of the competition from the Encyclopedia.

The articles and engravings in the Descriptions are more detailed and accurate than those in the Encyclopedia, and so are of more value for technical historians today. There is evidence that proofs of some 150 plates were stolen by agents of Diderot who had them re-engraved for his project. There is a similarity between many of the plates used in the two works.

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