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Hammer a piece of cold iron for a considerable time; you will unite its parts and diminish its bulk, and then it will appear heavier when put into th… - Jean Rey
" "Hammer a piece of cold iron for a considerable time; you will unite its parts and diminish its bulk, and then it will appear heavier when put into the balance.
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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
Moreover, all the world is agreed, that from death to life there is no return. Yet the chemists assure us, if we moisten the calx of lead, and mix it with water in which samphire (salicot) has been dissolved, then, having dried it, put it in a crucible with a small vent, and heat strongly and quickly, that we shall reduce it to its original state.
I imagine there are many persons who would have been startled (effarouchées) at the mere statement of this answer, had I given it in the outset, that will now receive it willingly, being, as I may say, tamed (apprivoisées) and rendered tractable, by the evident truth of the preceding essays. For doubtless they whose minds were preoccupied with the opinion that air is absolutely light, would have rushed to the encounter, exclaiming, Why do we not extract heat from cold, white from black, light from darkness, if from air, a thing absolutely light, we can extract so much weight? And they, who might have given credit to the weight of air, would have been unable to persuade themselves, that it could ever increase the weight of a substance balanced in itself.
This opinion is defective, to say no worse of it, in many respects. First, in attributing life to lead. Secondly, in supposing that the presence of the celestial heat makes it light, and its absence heavy. Thirdly, because it assigns the same reason for the increased weight of lead by calcination, and of animals by death. There is nothing of the kind. For as to life, how can lead possess it, since it is a homogeneous body, without difference of parts, without organs, and without any vital effect or action? If it move downwards, so does ceruse, which is only its corpse; if it be cooling (rafraischit), so is ceruse. Then how could it preserve this life, under a million of forms, that it may be made to assume and to cast off, yet always continuing to be lead? How, in the furnace (which would be a much greater wonder), where it may be kept in fusion a day, a month, or a whole year? It must have a very tenacious soul to undergo so much without being dislodged!
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