This is the sixth expanded and revised edition of this classic book - the first time a new edition has been issued in decades. Chapter titles are ...(1) The Physical and Chemical Properties of Gold ...(2) Alloys of Gold ...(3) Chemistry of the Compounds of Gold ...(4) Mode of Occurrence and Distribution of Gold ...(5) Treatment of Shallow Placer Deposits ...(6) Deep Placer Deposits ...(7) Ore Crushing in the Stamp Battery ...(8) Amalgamation in the Stamp Battery ...(9) Other Forms of Crushing and Amalgamating Machinery ...(10) Fine Grinding ...(11) Concentration in Gold Mills ...(12) Dry Crushing ...(13) Roasting ...(14) Chlorination ...(15) The Cyanide Process - Chemical Reactions ...(16) The Cyanide Process - General Methods ...(17) The Cyanide Process - Special Methods and Examples of Practice ...(18) The Refining and Parting of Gold Bullion ...(19) The Assay of Gold Ores ...(20) The Assay of Gold Bullion ...(21) Statistics of Gold Production and Consumption ...(22) Bibliography.