Essays Physical and Chemical: By M. Lavoisier, ... Translated from the French, with Notes, and an Appendix, by Thomas Henry, ...

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Joseph Johnson, 1776 - Chemistry - 475 pages
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Page 403 - Memoir on the nature of the principle which is combined with metals during their calcination, and occasions an increase in their weight", as well as Henry's synopsis of Priestley's opinion relating to the same phenomena.
Page 407 - Ms observations were essentially those of Priestley, but his conclusions were very different : ' It thus appears to be proved that the principle which combines with metals during their calcination, and which increases their weight, is nothing else than the purest portion of the very air which surrounds us, which we breathe, and which passes, during this operation...
Page 410 - Henry also inserted into the historical part a short account of Priestley's recent discoveries, particularly of nitrous oxide; and added an appendix on "Dr Priestley's opinion relative to the principle which is combined with metals during their calcination, and of his discovery of dephlogisticated air [oxygen]".
Page 415 - There remained no doubt on my mind but that the atmospherical air, or the thing that we breathe, consists of the nitrous acid and earth, with so much phlogiston as is necessary to its elasticity, and likewise so much more as is required to bring it from its state of perfect purity to the mean condition in which we find it.
Page 146 - ... and rendered noxious, by any other procefs ; but when it is put to a quantity of nitrous air, it diminifhes it fo much, that no more than one fourth of the original quantity will be left.
Page vii - Chymists, as no way intitled to that denomination? If those who unhappily spent their time and substance in search after an imaginary production, that was to reduce all things to gold, had, instead of that fruitless pursuit, bestowed their labour in searching after this much neglected volatile Hermes, who has so often escaped thro...
Page xx - ... decompofition of the three mineral acids ; 3dly, on the ebullition of fluids in the vacuum of an air pump ; 4thly, on a method of determining the quantity of faline matter contained in mineral...
Page xxxi - We are aftonifhed, in reading this Treatife, to find an infinite number of facts, which we are accuftomed to confider as more modern, and we cannot forbear to acknowledge, that Van Helmont has related, at that period, almoft every thing, which we are now better acquainted with, on this fubject.
Page 113 - ... does not instantly mix with common air. Indeed, if it did, it could not be caught upon the surface of the fermenting liquor. A candle put under a large receiver, and immediately plunged very deep below the surface of the fixed air, will burn some time. But vessels with the smallest orifices, hanging with their mouths downwards in the fixed air, will, in time, have the common air, which they contain, perfectly mixed with it. Considering the near affinity between water and fixed air, I concluded...
Page 315 - If it were permitted me to indulge in conjectures, I should say, that some experiments, which are not sufficiently complete to submit to public inspection, induce me to believe, that every elastic fluid results from the combination of some solid or fluid body with the inflammable principle, or perhaps even with the matter of pure fire, and that on this combination the state of elasticity depends. I should add that the substance fixed in metallic calces, and which augments their weight, would not...

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