The Notebooks of Leonardo Da Vinci

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Page 641 of 1565.
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MOULD(?).

The mould (?) may be of Venus, or of Jupiter and Saturn and placed
frequently in the fire. And it should be worked with fine emery and
the mould (?) should be of Venus and Jupiter impasted over (?)
Venus. But first you will test Venus and Mercury mixed with Jove,
and take means to cause Mercury to disperse; and then fold them well
together so that Venus or Jupiter be connected as thinly as
possible.

[Footnote: See the note to 637.]

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