Making and Knowing
A minimal edition of BnF Ms Fr 640 in English Translation

- - - - - folio image: 135r - - - - -

Colors for gold, or sauce

Take as much verdigris as sal ammoniac, & saltpetre the size of a bean. Because if you put in too much, it would make the whole thing boil so much that it would all pour out. Saltpetre is only put in to make it boil, so that you know when the material has boiled enough. This color put on sour melted gold makes it soft instantly.

at left top margin of folio 135r

Softening gold