Elements of chemistry / by Thomas Thomson, M.D.

  • Thomson, Thomas, 1773-1852.
Date:
1810
Catalogue details

Licence: Public Domain Mark

Credit: Elements of chemistry / by Thomas Thomson, M.D. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    ELEMENTS OF CHEMISTRY. THHE object of Chemistry is to ascertain the ingredients of which bodies are composed, to examine the compounds formed by the combination of these ing-redients, and to investi- gate the nature of the power which occasions these combina- tions. It may be divided into three parts : 1, A description of the component parts of bodies, or of simple substances. 2, A de- scription of compound bodies. 3, An account of the power which occasions combinations. This power is called affinity. These three particulars form the subject of the three following- books. BOOK I. OF SIMPLE SUBSTANCES. We are probably ignorant at present of bodies, strictlv speak- ing, elementary or simple. All that is understood in Chemistry by a simple substance, is a substance not yet decomposed, and which we cannot shew to be a compound. Those of that kind at present known are about forty-eight. They may be divided into two classes; those which can be confined in vessels, and of B