In the discussion of my paper on “ Close Sizing Before Jigging,” Mr. Louis remarks: “ What we really need to know as the basis
Table of ContentsDirect EstimationsDirect Estimation by LossIndirect EstimationEstimations by DifferencePure Arithmetical CalculationCalculation by FactorsCalculation by LogarithmsCheck Results of the Analysis of a Mixture Analysis of Chemical
Table of ContentsDRYING & IGNITING THE PRECIPITATEThe Apparatus requiredMethods of IncinerationWEIGHING THE PRECIPITATETable of Atomic Weights WASHING THE PRECIPITATE: A precipitate may be washed directly on the
A recent paper by Prof. George P. Merrill, Curator of the Department of Geology of the U. S. National Museum, Washington, upon ” An Occurrence
The accuracy of the silver-assay depends in great measure upon a careful regulation of the heat of the muffle furnace during the process of cupellation.
About six years ago the writer had occasion to visit a large magnetic iron-ore concentrating-plant, and then saw for the first time rubber belts employed
Table of ContentsMethods of Solution & Apparatus usedSaturated solutions Material of Vessels for Solution The student must consider the effect of the solvent used on the
After solution, certain minor operations may or may not be necessary, but as a rule the next essential operation is that of precipitation. In his
Table of ContentsFiltering MediumMethods of Gravimetric Precipitate FiltrationFiltration unaided by a vacuumFiltration accelerated by a vacuumAccelerated Filtration through PaperAccelerated Filtration through Asbestos—Gooch Crucible & Platinum Cone
Table of ContentsScorification-AssaysCrucible AssaysSilver Sulphide Assaying Methods There has been considerable discussion of late as to the best method of determining the silver-contents of sulphides
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