A Manual of Practical Assaying

added alkaline alloy alumina ammonia amount antimony arsenic ascertained assay assayer baryta bichromate black flux blast blowpipe boiling borax button calcined carbonate of soda carbonic acid cent charcoal chloride of silver clay coke colour combustion compounds containing cooling copper crucible cubic cupel cylinder decomposed determined diameter dilute dissolved employed excess experiments filter flame flask fluid fuel furnace fused fusible fusion gas-burner gives glass grains heat hydrochloric acid hydrogen ignited inches iodine lime liquid litharge manganese matter melted mercury metal method mineral mixed mixture mortar muffle nitrate nitric acid obtained operation oxide oxide of iron oxide of lead oxidising oxygen permanganate peroxide phosphoric acid piece placed platinum potash potassium precipitate produced proportion protoxide pulverised pure pyrites readily reagent reduced regulus roasting salt saltpetre silica slag small quantity sodium substance sulphate of lead sulphide sulphuric acid temperature tube washed weight zinc