The Discovery of Oxygen, Vol. 2: Experiments (Classic Reprint) - Hardcover

Inhaltsangabe

Excerpt from The Discovery of Oxygen, Vol. 2: Experiments

HE portions of Scheele's Chemical Treatise on Air and Fire here reproduced in English are intended to form a companion volume to No. 7 of the Club Reprints, which contains Priestley's account of his discovery of oxygen. Not only have the claims of Scheele to the independent discovery of this gas never been disputed, but the valuable volume of Letters and Memoranda of Scheele, edited by Nordenskjold, which was published in 1892,hplaces it beyond doubt that Scheele had actual priority in the discovery by about two years, although his printed account of it appeared sub sequent to that of Priestley by about the same length of time. Scheele's laboratory notes, which are still pre served in the Royal Academy of Science in Stockholm, shew that oxygen had been obtained by him prior to 1773, not only by heating red oxide of mercury, but also by several other methods. Priestley first obtained oxygen from red oxide of mercury in 1774.

In his Chemical Treatise Scheele endeavours, at considerable length, to prove by experiments his views as to the compound character of heat and of light. These portions of the work have been entirely omitted from what is reproduced here. All the places where omissions have been made are indicated.

Every care has been taken in the endeavour to make the translation a faithful reproduction of the meaning of the original, whilst literal accuracy has been aimed at rather than literary elegance.

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