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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    [ 40 ] Vegetables are very eafily melted, Minerals flower, and Metals floweft of all. And of the laft, thofe where¬ in the Contact of Parts is lefs, as in Tin and Lead, more readily give way; but thofe which are more Compact, as Gold and Silver, are not overcome but with a violent Fire. Now if the Force of Cohe- flon was proportional to the Quan¬ tity of Matter, or to the Weight of Bodies, we might from Staticks ac¬ count for all the Variety which occurs in Fuflon; for by knowing the Spe- cifick Gravity of a Body, we fhou’d then know what Force it requir’d to melt it. But becaufe the fame quantity of Matter may be fo va- rioufly difpos’d, that in one Body there fball be a much greater Con¬ tact than in the other, tho’ the Gra¬ vity be equal, or even lefs, at the fame time, therefore the, Force of Coheflon cannot be eftimated by Gravity:
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