INDEX. 303 



Page. 



Hunt, T. S., on Archooan trachytes and basalts 93 



Hydrostatic theory of eruptions 114 



Iron oxide in basalt 122 



Volcanic rocks 117,123,245 



Inconsequent drainage 102,287 



Junghuhn, Bataviau volcanoes 128 



Jukes, Carboniferous basalts 93 



Jurassic sandstone 20,150,176,184,281,287,289 



Shales 153,163 



Wedge 163 



Kaibab District 209,254 



Kaibab Plateau 209,252 



Kaiparowits Peak 253,291,298 



Kaiparowits Plateau 23,151,252,291 



Kanab, formations around 151 



King, C, liquefaction of lavas 128 



Permo-Carboniferous 146 



Segregation of crystals in lavas 124 



Laccolitic structure 50 



of Nav.ajo Mountain 290 



Lakes, glacial 285 



I^aramie beds {see also Cretaceous) 10,155,280,281 



Leucite 89,102 



Leucite basalt, classification of Ill 



Lignite ; 156 



Lime in eruptive rocks 89,117, 123 



Liquidity of basalts 135 



Liparite. (.See also Rhyolite.) 



Classification of 104 



Order of sequence 67,131-137 



, Of theTushar 175 



Little Creek Peak 192 



Logan, Sir W., Archiean basalts 93 



Lower Trias. (iSee Shin^rump.) 



M.agnesia in eruptive rocks 89,117,123 



Mammoth Creek 211 



Markdgunt Plateau, general discussion of (Chap. IX) 188 



Relations to the District of the High Plateaus 3 



Marsh, O. C, mammals of Lower Eocene 11 



M.arvine, Mount 259 



Marysvale 174 



Mesa Creek 249,295 



Metamorphic rocks compared with eruptive 117 



Tufas of East Fork Cauon 234 



Metamorphism of tufaceous beds 79,243 



Midget's Crest 181 



Miocene erosion 21,40 



Time 21,40 



Monoclinal flexures 26 



East Kaibab 32 



EchoClifl's 44 



Escalante 288,294 



Grass Valley 32,257 



San Rafael 44 



Wasatch 160 



Water Pocket 44,287 



