Fleta minor. The laws of art and nature in knowing, judging, assaying, fining, refining and inlarging the bodies of confin'd metals. In two parts. The first contains essays of Lazarus Erckern ... in V books: originally written by him in the Teutonick language, and now translated into English. The second contains essays on metallick words, as a dictionary to many pleasing discourses by Sir John Pettus ... Illustrated with 44 sculptures ... / [Sir John Pettus].

  • John Pettus
Date:
1683
Catalogue details

Licence: Public Domain Mark

Credit: Fleta minor. The laws of art and nature in knowing, judging, assaying, fining, refining and inlarging the bodies of confin'd metals. In two parts. The first contains essays of Lazarus Erckern ... in V books: originally written by him in the Teutonick language, and now translated into English. The second contains essays on metallick words, as a dictionary to many pleasing discourses by Sir John Pettus ... Illustrated with 44 sculptures ... / [Sir John Pettus]. Source: Wellcome Collection.

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    _ >-• ......, r_ Chap; . . * • . .;V;V ' IIh CHAP. III. ; Of (fold Slides. i ‘ • ' «• ( ' • ? f . * • tr pt- - U RT HER, know alfe that when Seflion. the Gold Oars and Gold Slices are clean- of for fed for to quicken : and the Gold drawn cjo!dflc^ ouf> with the Quid] fiver , and hath been quichgied , yet there will remain from the quickning a Slicfl, of which feme is poor in Gold, and feme rich, yet the rich Slicks may be made to pofit and melted like as a rich Silver Oar: But the other common Gold S He fa efpecially if they be of the fold-Mine at the River Eal) are flinty , and that the Centner which hath but a dram of Gold, cannot better be melted than over the raw7 Slides into Slad^lones i but if the Slides be not flinty of themfelves, then there muft be another flint, (which yields much Stone ) added to the Slicfl in melting, and when the slackflone doth not come out rich in Gold, then add more of fuch Flints to it, to help the Flint, until a Centner of the Slacfl-florte doth contain ij or 14 Drams in Gold[ but it muff not be wrought by adding more to it,becaufe if it fhould become too rich in Gold (it is to be feared that) thtSlakgs wrould remain too rich: therefore, if there be enough of fuch flints to be had, let them be added to it, or if the Slid\ it fdfbc flin¬ ty, and yield ftones , then ’twere better that the Slach^ ftone were brought no further in Contents, than to 10 drams of Gold in the Centner, and fo the Slack will re¬ main the poorer : thus the Iron flaky Oars (which have very febtil flaming Gold, and commonly tht Centner of G g it