[SCIENCE] MANUSCRIT : Memoir on the usefulness of observations of diseases and meteors, by Mr. THIESSET, doctor of the King and of the Faculty of Montpellier, in Troyes. Manuscript of 7 pages on laid paper, 28 x 21 cm. Very interesting scientific manuscript where the author underlines the importance of the quality of the air on the health and makes share of his research and studies on the subject. He relies, among others, on the works of Nollet, Réaumur or Jussieu. Precious undated manuscript, circa 1760.

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