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 6, 2024.

Pages

CHAP. XIX. Six more Instructions concerning good and deft Coppers.

ITEM, Take Copper to 11, 12, 13, 14, 15, 16, Loths, and of this one may make hard Lead, being commonly ta∣ken as Additions: of which 65 pounds will yield at all times in 4 pieces 39 loths of Silver; but if it be not

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enough (with the 65 pound of Copper in the Content) then one may take of the Copper three quarters of a Centner, and at all times upon one loth of Silver 29 pounds of lead, and this will make in one piece, three Centners four pounds of fresh lead, and in four pieces, 12 Centners, and 16 pounds, in which are 42 loths of Sil∣ver.

[Section. 2] Item, 65 pounds of Copper to 15 loths: one centner and a quarter of a centner of fresh lead, and 305 pounds of Litarge, there will come upon 4 pieces 11 centners 31 pounds of lead, in which will be 39 loths of Silver; and if one doth sever it in an Oven, and with such Ad∣ditions, there will come out of it 9 centners of lead, which will contain to three and three quarters of a loth, or three loths and a half: this is together, 33 loths, three drams; so there will remain in the Thornels and Kein∣stocks five loths (if well wrought) but it consumes much lead by it.

[Section. 3] If the Copper contain 18, 19 or 20 loths, 'tis usual to take sixty or sixty five pounds of Copper, according as one hath poor or rich lead, and the Addition is made thus, that together in 4 pieces, may come 75 loths of Copper and lead; and upon this 75 loths, is taken one loth and 15 pounds of lead; if then one do sever it in an Assay-Oven, it will yield 9 centners and an half of lead; and this will contain 6 loths and a half, or six loths three drams, and then there will remain in Thornells and Kein∣stocks, 11, 12 or 13 loths, but how the Additions are to be made, is hereafter specified.

[ 4] Item, One piece shall have (with lead and copper,) 3 Centners, 25 pounds, and four pieces; together 13 Centners, and of lead 11 Centners, 25 pounds, so there will come in one piece 65 pounds of Copper, to 17 loths; and two Centners and a half of lead to three

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loths; yet the 4 pieces will contain no more in copper and lead, then 75 loths.

[Section. 5] Item, 65 pounds of Copper to 18 Loths, make 47 Loths addition in the Lead. Take one centner three quarters of Lead to 4 loths, they do bring in 4 pieces; 28 loths one quarter of fresh, and 30 pounds of hard, so there will come 11 Centners, 25 pounds of lead, in 75 loths.

[Section. 6] But the Thornels which are to be severed from it, must have this Addition, Take to one piece, one centner and a half of lead-Thornels, 1 Centner of roast Thornels, 1 centner 18 pounds of hard, and one quarter of a centner of fresh Lead, and 30 pounds of Litarge, then the lead will commonly contain 3, or 3 and a half, to 4 loths of silver.

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