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].

  • Pettus, John, Sir, 1613-1690.
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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    CHAP. XII. To Affay Muddy Water coming from Springs of Silver. CHAP. XIII. How a true Lead-Grain is to be drawn from the A (jay. S Eft ion i. Care in die Allaying. 2. The pooreftLead not without Silver. 3 . Of Copper to be added to the Lead Grain. 4. Another way to make a Lead Grain. CHAP. XIV. How Slack-Stone and Copper-Stone are to be Tryedfor Silver. SZttion 1. What Slack-ftone is. 2. How to feparate it from Sulphur, &c. 3. How the Cakes of the Slacks are to be ufed. CHAP. XV. To A [jay Hard Work and Copper-Laech for Silver. CHAP. XVI. To /.ijjay melted Speize. (KEtfion 1. What Speize is. 2. The difference between Spize and Slack- ^ ftone1 3. To take the Silver out of the Spelter. CHAP. XVII. How black Copper is to be melted and cajl into Ingots. (f'Ettion 1. The difference of black Coppers. 2. How to be cut in pieces or Ingots. 3. How to call thefe Ingots. 4. Differences in Proof Ingots. 5- The Allaying an Ingot. 6- To govern the fire for it. 7. Of the Grains produced from the Allay. 8. Another way to try Copper for Silver. 9. Care of Inftruments. 10. The proving of black and raw Copper. 11. The Weight of the Copels. CHAP. XVIIL \ To Jlfjay Bell-Metal for Silver. CHAP. XIX. How old Silver-Plate or Coyns are to be Granulated. OEcfion 1. The graining of Silver profitable 2. Why Crucibles break of- ^ ten in this Work. 3 . To make Grains round, or hollow, and thin. 4. How to govern the Fire in this work of Granulation. CHAP. XX. How to Granulate Silver out of a Kiln. CSction 1. The manner of performing it, 2. A quick way of Granulation 0 3. What to do if the Crucible break. 4. The VII. S C U L PTU RE Deciphered.