Chemical Lectures of H.T. Scheffer by Torbem Bergman, J. A. Schufle (auth.), Torbern Bergman

By Torbem Bergman, J. A. Schufle (auth.), Torbern Bergman (eds.)

Torbern Bergman used to be one of many maximum chemists of the 18th century. He edited this number of lectures in chemistry via H.T. Scheffer and released it in 1775. It was once most likely the 1st publication designed for use as a textbook for college sessions in chemistry. Bergman awarded the 1st of his successively greater Tables of optionally available sights during this ebook, a desk of the chemical components which used to be one of many earliest makes an attempt to provide the entire chemical components and their houses in one desk. This desk preceded the trendy periodic desk of the weather via approximately a century. it really is of foundation of this desk that Bergman is taken into account to be the daddy of actual chemistry.
one of many many discoveries defined during this ebook is Scheffer's `Pelican Experiment'. which disproved the transmutation of components, and preceded via twenty years the same test performed by way of Antoine Lavoisier.
This publication might be of curiosity to historians of technological know-how and chemists specifically. Scientists commonly and educators may also be to learn this e-book. it may be used as extra studying in historical past classes.

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T. T. Sche££ers CHEMISKE FORELASNINGAR Rtirande SALTER, JORDARTER, VATTEN, METALLER, och FARGNING, Samlade, i ordnung och med Anrn~rkningar utgi£ne. FETMOR, st~lde UPSALA Tryckte pa Bokhandlaren M. Swederi bekostnad hos Joh. Edman, Kong. Acad. Boktr. 1775. SCHEFFER'S CHEMICAL LECTURES Concerning Salts, Earths, Water, Combustibles, Metals, and Dyes; edited with addition o£ copious Notes by Torbern Bergman, and published in Uppsala, Sweden, in 1775. Translated into English (1977-1988) by Joseph A.

Probably there is some dephlogisticated acid of salt at work here, which does not preCipitate silver, before it is restored to its usual condition by contact with some combustible substance. See § 23, Note 2. 23 FIRST SECTION, CHAPTER II. About Acids Glauber's Distilled Spirit o£ Nitre § 20. Ca) Clean saltpeter is put in an iron pan, and to this is added enough water to dissolve i t with heating over a smoking £ire, but i t must be continually stirred with a kni£e and at the same time i t must be scraped away £rom the bottom and edges o£ the pan so that i t does not become stuck or burned Cit may explode).

The fire begins to Cc) Even before act. the usual fumes appear in the vessel. which are darker in this case than when nitric acid is distilled. When so much has distilled that what remains in the retort becomes dry. all the fire must be removed except for 1 or 2 coals. because i t now should melt to a mass. which boils up so vigorously that i t boils over if the heat is too strong; but after the sizzling stops. i t is heated by a strong fire until all which is in the retort becomes white and dry.

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