tag="{http://www.w3.org/1999/xhtml}a">131

            "     "       measuring 133         (5) Concentration in lead 136             Quartz ores 136             Ores with oxide of iron 138             Ores with metallic sulphides 139         (6) Cyanide charges, residues, &c. 140         (7) Cupellation 142             Cupels 142             Cupellation temperature 143             Cupellation loss 145         (8) Inquartation 146         (9) Flatting 149         (10) Parting, in flasks 151                 "         in test tubes 152                 "         in glazed crucibles 153                 "         Loss, &c. 154         (11) Check assays, surcharge 154         (12) Bullion assays in special apparatus 156             Silver, &c., in gold bullion 157         (13) Sampling of base bullion, &c. 157 Cyanides—Commercial cyanides 160     Double cyanides 161     Prussic acid 162     Gold-dissolving power of cyanide liquor 162     Assay for cyanide strength 163, 165     Assay of commercial cyanide 167     Alkalinity of cyanides 167     Acidity of ores 168     Metals in cyanide liquors 169     Cyanicides 169 Platinum 170 Iridium 171 Mercury