Chymical lectures: in which almost all the operations of chymistry are reduced to their true principles, and the laws of nature. Read in the Museum at Oxford, 1704 / By John Freind. Englished by J.M. To which is added, an appendix, containing the account given of this book in the Lipsick Acts, together with the author's remarks thereon.

  • John Freind
Date:
1737
Catalogue details

Licence: Public Domain Mark

Credit: Chymical lectures: in which almost all the operations of chymistry are reduced to their true principles, and the laws of nature. Read in the Museum at Oxford, 1704 / By John Freind. Englished by J.M. To which is added, an appendix, containing the account given of this book in the Lipsick Acts, together with the author's remarks thereon. Source: Wellcome Collection.

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    [*♦] the Fire can no longer fubfift. From this Union arifes a third kind of Body, which being very Porous and Brittle, is eafily reduc’d to Powder: For the Fire having penetrated every where, into the Pores of the Body, the Particles are both hin¬ der’d from mutual Contact, and di¬ vided into minute Atoms; fo that they are eafily reduc’d to the fineft Powder. After the fame manner Quickjilver expos’d a long time to the Fire, is at length turn’d to a Calx. Fire fo divides and rarifies the Parts of Bodies, which are Calcin’d, that upon a fecond Fufion they will yield much fooner than before, as we Experience in the Calx of Lead; for the Force of Cohefion, which fhou’d refill the Fire, is diminifh’d. So Copper and Silver, which conlift of lefs Volatile Parts, require a very ftrong Fire to make them Fluid; But when
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