Media type: E-Article Title: Several Papers concerning a New Semi-Metal, Called Platina; Communicated to the Royal Society by Mr. Wm. Watson F. R. S Contributor: Brownrigg, William imprint: The Royal Society, 1750 Published in: Philosophical Transactions (1683-1775) Language: English ISSN: 0260-7085 Keywords: Number 496 Origination: Footnote: Access State: Open Access