Paper, 'The method manner and order of transmutation of copper into brass' by Thomas Povey Paper by Thomas Povey describing in detail the process of turning copper into brass using calamine [zinc ore] and charcoal. Subject: Metallurgy / Chemistry Published twice in Philosophical Transactions, first in vol 27 p 735 and again in vol 22 (1700) as 'The method, manner and order of the transmutation of copper into brass, &c. By Thomas Povey, Esq; brought into the Royal Society, of which he is a fellow'. 1690s