A Manual of Practical Assaying

added alkaline alloy alumina ammonia ammonium amount antimony aqua regia arsenic ascertained assay beaker bismuth black flux blowpipe boiling borax button cent charcoal Chemical chloric acid chloride of silver coal cobalt colour combustion containing cool copper crucible cupel decomposed dilute dissolved dried employed evaporated excess filter filtrate flame flask fluid fuel furnace fused fusible fusion galena gives glass globule gold grains grammes heat hydrochloric acid ignited inch iron lime liquid litharge lustre manganese mass matter mercury metal method mineral mixed mixture nickel nitrate nitric acid normal solution obtained opaque operation Ounce oxidising oxygen placed platinum porcelain portion potash potassium potassium carbonate powder precipitate present produced proportion pulverised pure pyrites quartz readily reduced residue roasting salt scratched separated silica slag small quantity soda sodium carbonate Specific gravity substance sulphate sulphide sulphuric acid temperature tion tube washed weight yellow zinc