NDKX, 
147 
Page. 
Sandstone, green L8 21 
Sandstone, vanadiferous 20 
San Francisco, Cal 125 
San Miguel River, Colo 9-14 
Schaller, W. T., on dumortierite 91-120 
on ferric tellurite 55 
mineralogical notes 121-144 
Schaller, W. T., and Hillebrand, W. K.. on 
lawsonite 58-00 
fjchmiedeberg, Germany 93 
Schobrowitz, Austria 93 
Scolecite. 87-89 
Shannon mine, Ariz 46, 52 
phedd, S., on pseudo-serpentine 69 
Sierra Abajo district, Utah 11 
Silicates, action of silver and thallous ni- 
trates on 75-90 
Sillimanite rocks 97-99 
Silver analcite 76, 77 
Silver ehabazite 81, 82, 83, 85 
Silver natrolite 85, 86, 89 
Silver nitrate, action of, on silicates 75-90 
Silver scolecite 87, 89 
Silver thomsonite 79, 80, 81, 85 
Sinbad Valley, C< »lo 14 
Smith, W. B., cited 46 
Soda Springs Valley, Nev 32-34 
Spangolite 52-53 
Spanish Peaks, Colo 133-135 
Standard Consolidated mine, Oreg 132 
Stassfurt, < Germany 38 
Steiger, G., analysis of pseudo-serpentine .. 69 
on action of silver and thallous ni- 
trates on silicates 75-90 
jlteiger, G., and Clarke, F. W., on "calif or- 
nite" 72-74 
Stevens mines, Ariz 16, 47 
Stilbite 84, 85 
Sumpter, Oreg 132-133 
Sweden, dumortierite from \\>> 
Page. 
Table Mountain, Colo 76,79 
Tell urite 126-128 
Tellurium minerals 55,56,57, 126-128 
Terazas mine, Ariz . ... 47 
Tetradymite 57 
Thalenite 61-68 
Thallium andesite 77, 7s 
Thallium ehabazite 83,84,85 
Thallium leucite 79 
Thallium mesolite 88,89 
Thallium natrolite 86,87,89 
Thallous nitrate, action of, on silicates 75-90 
Thatcher, R.W., cited 69 
Thomsonite 79-81 
Topaz 129-131 
Trader, II. B., cited 57 
Tridymite 128, 129 
Turner, II. W., cited 32 
Tvedestrand, Norway 91 
United States Marble Company, Wash 69 
Uranium ores 9-31 
Vanadiferous minerals 9-31, 135-139 
Vanadinite 135-139 
Vanadium ores 9-31, 135-139 
Vesuvianite 72, 73 
Voilleque, , and Poulot, C, cited 22 
Vom Rath, cited 139 
Wassons Bluff, N. S 81,84 
Wells, II. L., and Penfield, S. L., on ger- 
hardtite 54 
Whale Cove, N. B 87-88 
Whitehorn, Colo 57 
Whitfield, J. E., cited 114,118 
Willemite 46 
W. P. H. mine, Colo 55, 126 
Yellow Bird claim, Colo 24-29, 30, 31 
Yellow Boy claim, Colo 24, 25, 27, 28 
Yerington, Nev 140-143 
Yttrialite 61-68 
Zinnwaldite 129-130 

