Elements of chemistry ... / Translated from the German [by Henry Stutzer].

  • Joseph Franz von Jacquin
Date:
1803
Catalogue details

Licence: Public Domain Mark

Credit: Elements of chemistry ... / Translated from the German [by Henry Stutzer]. Source: Wellcome Collection.

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    III. The fabje6ts upon which Chemiftry is employed are all material fubftances capable of be- in^ included in veffels; for this is neceffarily re- quired, in order that a body may be chemically ex- amined. It is true, modern Chemifts have begun to inveftigate the properties of fome bodies which, per fe, and in an elementary date, do not anfwer to this maxim; but, as Nature does not produce fuch bo- dies in a fimple, but always in a compound ftate, therefore the limits which Boerhaave prefcribed in Chciniftry, remain eftablifhed, viz. That a Chemift can inveftigate thofe bodies only which he is able to conhne in veffels. IV. Although the proceffes and experiments to which Chernifts have recourfe to ere6l the vaft edifice of their theory, be extremely numerous and diverfified, yet they may be reduced to two fpe- cies, which comprehend the whole art of Chemiftry. The firft is analyfis, or decompofition; the fecond fyn- thefis, or compofition. In analyfis, the parts, of which bodies are compofed, arc feparated from each other. Thus, if you reduce cinnabar, which is compofed of fulphur and mercury, into fulphur and mercury, and exhibit thofe two bodies in a feparate ftate, you fay, you have decompofed, or analyzed cinnabar. V. But if, on the contrary, fcveral bodies be mixed together, and a new fubftance be produced^ the procefs is then termed chemical compofition, or fynthefis. The cinnabar, already mentioned, may afford us another example; for, if, by fufion and
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