INDEX. 



Page. 



Shafts, depth of 15 



Sheeted veins, description of 23 



Silver, occurrence of, in ores 21 



production of 9 



Sphalerite, occurrence of 21 



Stevens, E. A., on basalt dikes 26 



Strong mine, production and depth of 19 



Structure of ore bodies, description of 22 



Sylvanite, composition of 20 



Tellurides, occurrence of 20 



Topographic map, revision of 7-8 



Topography, description of 11 



Tuff and breccias, occurrence and character 



of... 12 



Page. 



Underground development, extent of 15 



Underground water, discussion of 31-32 



Veins, sheeted, description of 23 



Victor mine, production and depth of 18 



Vindicator mine, production and depth of. 18 



Vindicator vein system, mines of 18 



Volcanic rocks, occurrence and character of 11-14 



W. P. H. mine, location of 17 



Water, underground, discussion of 31-32 



Wild Horse mine, oxidation in, depth of. . . 26 

 production of IT 



o 





