^A Chemical Analysis of Wolfram and Examination of a New Metal, which enters into its Composition, By Don John Joseph and Don Fausto de Luyart, Translated from the Spanish by Charles Cullen, Esc. To which is prefixed A Translation of Mr. Scheele's Analysis of the Tungsten, or Heavy Stone; with Mr. Bergman's Supplemental Remarks, London, 1785, 67 pp.