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Papers and Notes Read Before the Society v
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agitation alkaline alloy amalgamation ammonia ammonium amount antimony apparatus assay boiling bullion carbon chloride coal colour concentrate containing copper cost crushing cupel cyanide process cyanide solution determined dilute dissolved drill dust electric Engineering experiments explosives extraction filter filtrate furnace gold graphite heated hydrochloric acid Improvements Industry iridium iron isoprene Johannesburg Journal lime material ments mercury metal metallurgical method miners mines nitric acid obtained operation osmiridium oxide oxidising oxygen P. O. Box paper phenolphthalein pipe plant plates platinum potassium potassium cyanide practice precipitate present pressure produced pulp pump pyrite quantity Rand reduced residue rock rope rubber sample sand selenium settling shaft silver slime Society of Chemical sodium soluble South Africa steel sulphate sulphide sulphuric acid surface tion titration tons Transvaal treated treatment tube mill underground washed weight zinc