200 



SILVER-LEAD DEPOSITS OF EUEEKA, NEVADA. 



Secondary fissure, Connection of ore bodies with the 72 



, Dip and formation of the 33 



, Relations of the, to the quartzite 48 



Sediment in connection with ore 76 



Seventy-six mine 3 



Shafts, Timbering of J50, 154 



Shale, Connection of the two belts of 37,38 



, Dip of the, in the Eureka 36 



Jackson 35 



in the Albion 48 



in the Richmond and Eureka Ill 



Lower belt of, in the American and Jackson 34 



Eureka 36 



K.K 36 



Phoenix 35 



, Physical nature of the 153 



, Two belts of 34,182 



Silicate of iron 58 



zinc 56 



Silurian represented at Eureka 5 



.Lower, Lead deposits in the 65,66 



Silver, Estimation of, in country rock 120 



in ores of Adams Hill 167 



in the different rocks 187 



.Ratio of, to sold in Richmond lead 163 



, Relation of tbe, to the amount of lead reduced.. 121 



Silver Connor mine, Ores of the 63 



Silverado District 2, 4, 50 



Slag, Analysis of Richmond 160 



Smelting, First attempts at 3 



Solfataric action and ore formation 188 



, Causes of 89 



Solutions, Derivation of 93 



.Formation of metal-bearing 92 



Specimens from the Eureka tunnel 16 



Speiss, Analysis of 160 



Stalactites in ore bodies 97 



Steam, Use of, in the Luce & Rozan process 163 



Stock, Use of the word 70,185 



, Definition of 118 



Substitution, Eureka ore bodies formed by 104 



theory, Evidence against the 104 



in favor of the . . 105, 189, 190 



Sulphate of lead 68 



Sulphide of molybdenum 55, 58 



zinc '. 56 



Sulphuret ore, Evidences of manner of deposition of the 80 



Page. 



Supremo Court of the United States, Decision of the 113 



Table of Contents vii 



Tertiary, Rhyolito eruption in the 106 



Theory of substitution. - 189 



Timbering, General method of 153 



Timbers, Material and size of 157 



Tip Top claim 3 



incline Ill 



Toadstone in Cumberland and Derbyshire 67 



Tribute system, Description of tbe. 150, 151 



Tunnels as a means of prospecting 341, 142 



Tybo, 2 G mine at 65 



Upper Mississippi region, Formation oforeinthe 104 



Lead deposits of the 65 



Upper Silesia, Ore deposits of 68 



Utah mineral zone 117 



tunnel, Main fault in the 113 



Vein, Miners' use of the word 115 



vonCotta; on classification of ore deposits 118 



; on deposits of Westphalia 68 



vonGroddeck; on classification of ore deposits 118 



; on porphyry in Cumberland 67 



"Wad 69 



Wages of miners 150 



Waite, Chief Justice, Decision of 113 



Water, Extent of flow of 109 



in Prospect Mountain 107 



the Atlas shaft 107 



Ruby Hill workings 107 



level in Diamond Valley 108 



, Prospects of, in the future 110 



, Rearrangement of ore by 186 



winze in the Richmond 110 



Weighing assay buttons 129 



Weights used in assaying 124 



Wescoatt, N., Testimony of Ill 



West ore body, Description of the 78 



.Connection of the, with fissures 75 



, Ore channel of the 114 



Westphalia, Ore deposits of 68 



West vein on theComstock 115 



White Pine District 65 



Whitney, J. D., Testimony of Ill 



Wide West mine on Adams Hill 167 



Williams mine, Ores of the 63 



Williamsburg mine 167 



Wulfemte 54 



16 ^ 



