VARNISH [OR POWDER].
Mercury with Jupiter and Venus,—a paste made of these must be corrected by the mould (?) continuously, until Mercury separates itself entirely from Jupiter and Venus. [Footnote: Here, and in No. 641 Mercurio seems to mean quicksilver, Giove stands for iron, Venere for copper and Saturno for lead.]
Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.