A Discovery of subterraneall treasure viz. of all manner of mines and mineralls from
the gold to the coale with plaine directions and rules for the finding of them in
all kingdomes and countries. And also the art of melting, refining and assaying of
them is plainly declared... also a perfect way to try what colour any berry, leafe
flower stalke, root, fruit, seed, barke or wood will give, 1639
Oxford dictionary of national biography, http://www.oxforddnb.com/view/10.1093/ref:odnb/9780198614128.001.0001/odnb-9780198614128-e-22360,
2018-06-12