INDEX TO ROOKS. 
375 
Page. 
Riesenase 208 
liesenose 109, 173 
feossw i'inose 79, 243, 245 
S. 
Siilcmose 166 
Sandstone 22, (17, 291 , 292, 293, 294, 295, 296,363 
Banidine 175 
laussurite-gabbro — 82 
laxonite 43, 256 
Schist 77, 82, 83, 84 
lericite-schist GO, 77 
Serpentine 32, 33, 222, 2 16, 2 19, 250, 260, 264, 266 
Shale (17. 34&, 344, 347, 348, 349, 350 
Shonkinite 144,150,153 
Shonkinose 144, 148 
Ihoshonite 116,119 
Bhoshonose 79. los.H3.ii4. 
116, 11?, 119, 128, 139, 149, 155, 159, 199, 238, 268 
Biliceous sinter 298,299,300 
Bitkose 267 
Slate .. 91,337,338,339,340,341,342,344,345,346,350 
Smaragdite 50 
Soda-grannlite 240 
Sodalite 25, 151 
Bodalite-syenite 150 
Solvsbergite 140, 191 
Spherulite 171 
Bpilosite 81 
Syenite .... 46, 138, 142, 148, 150, 152, 159, 170, 181, 236 
Syenite-aplite porphyry 191 
Syenite-diorite porphyry 143 
Syenite porphyry 75, 102, 111. 142, 143, 191, 236 
T. 
Taeh ylite 42 
Tallow clay 359, 361, 362 
Tehamose 39, 56, 121, 134, 154, 211, 233, 253 
Tephrite 187 
Teschenite 22 
Theralite 140,141 
Tinguaite 140, 153, 186 
Tonalase 55 
Tonalite 38 
Tonalite-aplite 270 
Tonalose 22,54, 103, 104, 
105, 106, 110, 112, 113, 124, 130, 155, 174, 178, 
181, 185, 189, 195, 198, 199, 206, 209, 211,215, 
216, 218, 220, 221 , 223, 226, 227, 230, 231, 233, 
237, 243, 257, 258, 259. 264, 265, 2(17 270, 271 
Tordrillite 207, 20-. 270 
Page. 
Toscanose 26,28,39,41,54,55,61,65,69, 
89, 110,120, 122, 121, 134, 135, 137, 141, 142. 143, 
151, 155, 156, 164, 107, 168, 173. 170, 177, 178,180, 
182, 184, 188. 192, 197, 198, 204, 205, 207, 208, 211, 
220, 221 , 225, 233, 238, 240, 211, 251 , 253, 254, 269 
Tourmaline-biotite-schist 98 
Traehyandesitie breccia 147 
Trachydi -lerite 199 
Trachyte 22, 114, 122, 140, 147, 164, 166, 196,272 
Trachyte-andesite 114 
Trachytic rhy< »lite 121, 122 
Travertine 322, 323 
Tuff 23. 122, 251 , 203 
Tuolumnose 38, 236, 268 
TT. 
Umptekosc 26, 140, 272 
Uralite-diorite 224 
Tvahh »se 72, 73, 2 12. 272 
V. 
Vaalase 198 
Vaah ise 40, 183, 231, 265 
Varingose 41, 246 
Viezzenose 47 
Volcanic ash 98, 254. 27:',. 274 
Volcanic bombs 276 
Volcanic glass 131 
Volcanic sand 131, 158, 217 
Vulcanose 60,236 
Websterite 51, 63, 247 
Websterose 51, 63 
Wehrlite 31, 79, 130 
Wehrlose 130 
Windsorite 28 
\V< »] lastonite-gneisa 235 
Wyomingase 155,266 
Wyoniingite 99 
Wyomingose 99, 144 
Y. 
Yellowstonose. . 30, 48, 55, 104, 105, 107, 110, 112, 123, 
124, 158, 160, 174, 176, 177, 179, 182, 184, 209, 210, 
213, 210, 220, 225, 220, 227, 2 40, 201, 202. 263, 273 
Yogoite 152 
Yukonite 270 
Yukonose 220, 270 
Zoisite-hornblende-diorite 199 

