Gabriel Plattes, HB, 60pp, Institution of Mining and Metallurgy, reprint 1990 (Title reads A Difcovery of Subterraneall Treafure)

A discovery of subterraneal treasure: of all manner of mines and minerals, from the gold to the coal; with plain directions and rules for the finding of them in all kingdoms and countries. And also, the art of melting, refining, and assaying of them is plainly declared, so that every man that is indifferently capacious, may with small charge presently try the value of such oares an shall be found either by rule, or by accident. Also a perfect way to try what colour any berry, leaf, flower, stalk, root, fruit, seed, bark, or wood will give: with a perfect way to make colours that they shall not stain, nor fade like ordinary colours