Of natural and supernatural things are the writings of Basilius Valentius, on a study of the first tincture, root and spirit of metals and minerals and how they are conceived, generated, brought forth, changed, and augmented. The text was translated out of nigh Dutch by Daniel Cable, and was originally publiched in London about circa 1671. "Of the medicine or tincture of antimony, as well to preserve mans body in health, and to divert all desperate and incurable diseases, as also to cure the leprosie of metals, to purify and to transmute them into the best gold." Roger Bacon, Noble and Learned Philosopher