| Silver-mining | [11] |
| Great Britain | [11] |
| British Isles' Yield of Silver | [11] |
| Spain | [11] |
| America | [11] |
| Native Silver | [11] |
| European Supplies of Silver | [12] |
| American Supply of Silver | [12] |
| The Richest Mine | [12] |
| State of the Jewellery Trade | [12] |
| Yield of Silver | [13] |
| Foreign Silver Currency | [13] |
| Chief Sources of British Silver | [13] |
| State in which it is found | [14] |
CHAPTER III.
The Assay of Silver Ores.
| Silver and Mercury | [15] |
| Assaying of Silver Ores | [16] |
| Crucible Assay | [16] |
| Fluxes for Crucible Assay | [16] |
| Assay of Genuine Silver Ores | [16] |
| Carbonate of Soda | [16] |
| Dimensions of Crucible | [16] |
| Litharge | [17] |
| Preparation and Charge for Assay | [17] |
| Treatment in the Furnace | [18] |
| Casting-mould | [18] |
| Scorification Process | [18] |
| Fusing Cup or Scorifier | [19] |
| Special Form of Scorifier | [19] |
| Scorification Assay the Reverse of Crucible Assay | [19] |
| Charge for Scorification Assay | [20] |
| Advantages of the Process | [20] |
| Anthracite and its Object | [21] |
| Separation of the Silver from the Slag | [21] |
| Borax, use of, in Assaying | [22] |
| Continental Method of Assaying | [22] |
| Flux and Charge for Crucible | [23] |
| Details of the Process | [23], [24] |
| Skittle-pot | [25] |
| Cupellation | [26] |
| Cupel, its Mode of Manufacture | [26] |
| Cupel-mould | [27] |
| Assayer’s Muffle | [28] |
| Cupel-tongs | [28] |
| Brightening | [29] |
| Sprouting | [29] |
| Weighing of Silver Assay | [30] |
| Chief Alloy of Silver | [30] |
CHAPTER IV.
The Cupellation of Silver Ores.
| Test-ring | [31] |
| Preparation of Bone-ash | [32] |
| Defects in Bone-ash Cupel | [33] |
| Currents of Air to the Furnace | [33] |
| Withdrawal of the Silver from the Cupel | [34] |
| Removal of the Litharge, Manner of | [35] |
| Quantity of Alloy per Cupel | [35] |
| Purity of Silver after Cupellation | [37] |
| Ancient Method of Assaying | [37] |
| Dr. Lamborn on Assaying | [38] |
| Scriptural Testimony | [37], [38] |
| English System of Assay | [39] |
CHAPTER V.
The Alloys of Silver.