2051.1 Gabriel PLATTES. A discovery of subterraneall treasure, viz. of all manner of mines and mineralls, from the gold to the coale; with... rules for the finding of them... And also the art of melting... and assaying of them is plainly declared... Whereunto is added a reall experiment whereby every ignorant man may... try whether to any peece of gold... be true or counterfeit... Also a perfect way to try what colour any berry, leafe... barke, or wood will give... 4° London: I. Okes for J. Emery 1639 Ferguson Wisconsin