By Chas. Fulton, published in 1911, 215 pages, soft bound high quality copy of out-of-print book. Contains the assay mixtures and full information on each step of the assay including some data on assaying platinum. Fire assays have been the method of detecting gold for the last 5000 years. Chapters are on tools, sampling, weighing, reduction, crucible assays, cupellation and parting, special methods and errors in the assay. An advanced book on assaying. PDF DOWNLOAD AVAILABLE!