A treatise of metallica. [electronic resource] : Bvt not that which was published by Mr. Simon Stvrtevant vpon his patent, which is now by order cancelled and made voyd, by reason of his standing out-lawed at the time of the grant, and so still continuing, and his neglect, and not performance of the workes. / Wherevpon priviledge, by patent, is granted by the Kings Most Excellent Maiesty to Iohn Rovenzon, Esquire, for the making of iron and other mettals and materials with seacole, pit-cole, &c. for one and thirty yeares ; according to which patent and direction therein, this treatise, composed by the same Iohn Rovenzon, is published in print before the end of Easter tearme, viz. the 15 of May. 1613. And containeth a briefe explanation, demonstration, or discouery of the inuentions priuiledged, and the means, instruments, engins, furnaces, &c, with the materials, things, and workes to be made by the said fewels. The charge of an iron worke with sea-cole, is set downe in the latter end of this booke.