The Mineral Industry . Tank Method of OperatingTower for Refining Cupric Sulphate Solu . 242: PROGRESS IN ELECTROCHEMISTRY AND ELECTRO . 245: FELDSPAR . 268: GARNET . 274: tralasiaSouth AmericaBritish GuianaDutch East Indies India . 282: GOLD AND SILVER . 289: the World Production of Silver in the United StatesSilver Produc . …