Remarks on Mr. Robert Dossie's Institutes of experimental chemistry.

Date:
1760
Catalogue details

Licence: Public Domain Mark

Credit: Remarks on Mr. Robert Dossie's Institutes of experimental chemistry. Source: Wellcome Collection.

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    The author has labour’d at a <c A fyftem of chemical philofophy, founded, like the mechanical, on genera! principles.” What he calls general principles are deduced only from particular faCts, and by being made general, they are made falfe. Thus, as the metallic fait vitriol parts with its acid in the fire,it is affirmed that all metallic falts will do the fame 5 b whereas, of thofe made with the marine acid, there is not a fingle one that will. In the table of (pecific attractions (one \ of the fundamental doCbines of his fyftem) we are taught, c that all acids have a greater attraction to mercury than to filver, which, though true in regard to the marine acid, is falfe in regard to the nitrous $ that they have a greater attraction to mercury than to tin or antimony, which is true in regard to the nitrous, and falfe in regard to the marine ; greater to zinc than to iron, which is true in regard to the nitrous and marine, and falfe in regard to the vitriolic:; greater to mercury than to lead, which feems to be true in regard to the vitriolic, but is falfe in regard to the a Preface, Page xi. * Vol. i. Page 367* f Vol. i. Page 274* nitrous
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