In a recent discussion of Dr. Jeffries’ paper on tungsten, J. C. W. Humfrey, after taking exception to certain of the author’s ideas relative to
The writer has been unable to find much information relative to tests made to determine the effect of forging on the specific density of steel.
Using a Charpy Impact Machine, we have done considerable work on notch-bar testing and are farther at sea now than when we started. So far,
Table of ContentsBrinell Hardness of Babbitt Bearings at Increasing TemperaturesEffect of Compression on the Brinell Hardness of BabbittsRolling of Babbitted Linings by the Mills Micrometer Roller Brinell Hardness
Table of ContentsDistillation Products from Reduction of Zinc OreMethod of InvestigationNitrogenHydrogen and HydrocarbonsCarbon Monoxide and DioxideOxygenCondition of ZincConclusions from Preceding ExperimentsPreliminary InvestigationsReduction in Carbon TubeReduction in
Table of ContentsZinc Dust PrecipitationContinuous PrecipitationFilter PressingFineness of Zinc DustEfficiency of PrecipitationZinc Dust VS Zinc ShavingsComposition and Treatment of Precipitate In the cyanide process, gold and silver are dissolved
Since the adoption by the U. S. Bureau of Standards several years ago of specifications for standard 100- and 200-mesh sieves, frequent requests have been
For some years past the principle enunciated in the discussion referred to has been known to the writer and demonstrated by him to be an
Table of ContentsEquipment Used to Remove SilverMethod of OperatingHow to Operate a Desilverization PlanyGrade of KettlesCorrection of GradeDescription of an Operation and ProcessDrossFuelLaborLaboratory ExperimentsTredinnick –
Table of ContentsMelting under Coke CoverMelting under Charcoal CoverOxygen and Sulphur in the Melting of Copper Cathodes The melting of cathode copper, usually containing 99.98+ per