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Book VII: Ore Testing

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BOOK VII.
265
weights in one pan, and in the other, ore or metal as heavy as that weight.
The third is the most delicate, and by this we weigh the beads of gold or
silver, which, when the assay is completed, settle in the bottom of the cupel.
But if anyone weighs lead in the second balance, or an ore in the third, he
will do them much injury.
Whatsoever small amount of metal is obtained from a centumpondium
of the lesser weights of ore or metal alloy, the same greater weight of metal
is smelted from a centumpondium of the greater weight of ore or metal alloy.
END OF BOOK VII.
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