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 assays of Lazarus Erckern, chief prover, or assay-master general of the empire of Germany, in V. books, orinally 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.
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Title
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 assays of Lazarus Erckern, chief prover, or assay-master general of the empire of Germany, in V. books, orinally 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.
Author
Ercker, Lazarus, d. 1594.
Publication
London :: Printed for the author, by Thomas Dawks ...,
1683.
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Subject terms
Assaying -- Early works to 1800.
Metallurgy -- Early works to 1800.
Link to this Item
http://name.umdl.umich.edu/A54597.0001.001
Cite this Item
"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 assays of Lazarus Erckern, chief prover, or assay-master general of the empire of Germany, in V. books, orinally 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." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A54597.0001.001. University of Michigan Library Digital Collections. Accessed June 13, 2024.
[Section. 1] ZWITTER or Tin-stone whereof Tin* 1.1is made, is heavy Oar, yet the Metal which it produceth is the lightest of all other Metals; the Zwitter is to be known by its brown colour, which in∣clines a little to yellow, yet the rich Zwit∣ters are black and of fine growth, and so smooth as if they were polished, and very rich in Tin, yet sometimes the Zwitters are found in another form like Iron stone, or a pointed woolferan Oar (which the old Miners have not known) therefore 'tis needful to prove the Zwitter with diligence whether it be Tin-stone or not, and whe∣ther it yields much or little, that the Mine-workers may the better know what to do.
But the Tin-stone, as well in the little proof as in the great work, must not only be burnt, but also purified clean before the melting, otherwise it yields not so much Tin, as when cleanly prepared.
Yet, 'tis to be known that every Tin-Mine-work hath a singular manner to prepare the Zwitter or Tin-stone, which is to be admired.