Thus the opinion of Cardan appears so frivolous, that I am grieved that a great man, and one who is justly esteemed by all the world, should have lat… - Jean Rey
" "Thus the opinion of Cardan appears so frivolous, that I am grieved that a great man, and one who is justly esteemed by all the world, should have lately declared to me that he inclines towards it.
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About Jean Rey
John Rey (1583–1645) (or, in French) Jean Rey, was a physician of , France who in 1630 published a tract on , or of metals, after being notified by Brun, an apothecary of Bergerac, France, of Brun's experiments (as early as 1629) on the calcination of tin. Brun had melted 2 pounds six ounces of tin, and after 6 hours the resulting calx weighed seven ounces more than the original tin. More than one hundred and forty years before Antoine Lavoisier, John Rey recognized that in the calcination of lead or tin, part of the air provided an increase in mass to the calcined metal oxide. His work was eclipsed first by the phlogiston theory and then later, by Lavoisier's discoveries disproving the existence of phlogiston. Lavoisier's oxygen theory confirmed Rey's earlier report, of which Lavoisier claimed he was unaware. After the presentation of Lavoisier's 1775 memoir at the Académie des sciences, (1725-1798) wrote a letter to Abbé , director of the journal Observations sur la Physique, sur l'Histoire naturelle and sur les Arts, to ask him to publish an update notice, recognizing the priority Rey's work.
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Additional quotes by Jean Rey
Neither can the loss of this heat render them heavy, for I have already proved that nothing increases in weight but by the addition of matter, or by diminution of volume; but here there is nothing of the kind; so that the disappearance of the heat cannot add any thing, and as to its bulk, it is visibly enlarged; the compact and solid substance of the lead being reduced (amenuisée) to so many small parcels, that their number is almost infinite.
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Thus, the motion of the orbits of the planets from east to west, having its cause in a higher heaven, is called by all violent, without, however, its doing them any injury. Moreover, they who argue thus condemn themselves, since they are compelled to admit, that not only the motion of water and air, but their very abiding places, are held by violence:—that of the latter, under fire, and that of the former, above earth.
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