On the preparation of large quantities of tellurium

Abstract For several years I have worked upon bismuth ores of varying richness for the extraction of the bismuth they contain, and I have already communicated the results to the Royal Society. Many, if not most of these ores, contained traces of tellurium. Tellurium has a marked tendency to associate itself with bismuth, as silver may be said to do with lead, or phosphorus with iron, and accordingly the crude bismuth extracted from these ores invariably contained small quantities of tellurium, which was reduced together with the bismuth, and was found to exist in it in a greater proportion than in the ores.