p. 41




Status: Needs Review

[Sal alcali] [sic]
Then Rx [recipe] of the best Zink ʒ [dram] iiii [4]
Tutty aa + the [t?]of a walnut
of Venetian Borax, mix & throw these into the
Crucible, & it will immediately crackle, & you
will have a light yellow Matter with a
yellow Flame rise up, when this is by degrees
gone off + well worked. Stir
the [shaves?] well with an iron wire
till it is burnt + the Copper remains very
hot in the Flux, Pour it into an Ingot
well smeared with wax, +you may ham
mer it + draw it to wire, + it will work +
look like the best Gold.

NB This is exactly given in the
School of Arts under the name of
Aurum sophisticum_ Pag:35.t.sol

[double line]

Notes and Questions

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Aurum sophisticum mimics gold for japanning wood etc.


Sal alkali is an alkaline carbonate.