Note 93 — BOOK I. (continued 2)

Vasari, who is difficult to understand, at least by many, on account of his brevity, touches upon the different processes used by Maso, which are these: When he had cut the plate, he next proceeded to take a print of it, before he inlaid it with niello, upon very fine earth; and from the cut being to the right hand, and hollow, the proof consequently came out on the left, shewing the little earthen cast in relief. Upon this last he threw the liquid sulphur, from which he obtained a second proof, which, of course, appeared to the right, and took from the relief a hollow form. He then laid the ink (lamp black or printer's ink) upon the sulphur, in such a way as to fill up the hollows on the more indented cuts, intended to produce the shadow; and next, by degrees, he scraped away from the ground (of the sulphur) what was meant to produce the light. And this is also the plan pursued in engraving on copper. The final work was to polish it with oil, in order to give the sulphur the bright appearance of silver.