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Show Vlll LIS'f 01•' lLLUSTHA'J'lO~S. Figm·o 47. Cavo Ln.ko iu Kanab Ca.nou . . .•. .. .. ••.... . ...... .. ..• .. .... . .•..... . ••.. To faco pngo 132 4f.:!. Cafion in Escalante lln1:1in ................ . ........ .. .. .. .. . . .... . . .. .... To faco pn~o 137 49. Towor at tho month of tho Dirty Devil Ri vor ... .. .... ....... ..... .. .. .... To fnco pago 141 !)0 . .D:.td-lantl Monutaiu1:1, 11o:u· Hlack'~:~ Jo'or·k .......... . . ..... .. .... ...... ...... To fu.co pngo Ir1 l ::i l. Gonornli?.od section through tllo Uinta Mountains ...... ...... . ...... .. ... 'l'o fuco pngo 15!i ::i2. Northum Blopo of tho UinttL Mountains .. .. .. .. . ....... .... .......... .... To f:wo pn.go J::ii:l r,:J. A Di;wlinal Val loy ...... ............ .... .... .... .... .. .. . ... ....... ... .. To f:tco pngo HiO · 04. A Ca.tnclillltl Vnlloy_ ...... .. .. .. ...... . .. . ............. .. .. .. . . .......... To faco pugo 1GO 55. An ALaticl innl Valley, wiLh section . ... . .......... . ...... .. ............... To face pngo WO 56. ASyoolinal Vnlloy .... ........ .. ........ . ........ . . .. ... .. . . ............ To fnco pngo 160 57. An Anacliu:tl Valley .. .. . .. .. . ..................... ... ... .. ..... ........ To faco pngo HiO 58. A Monoclin:tl V nllcy .. .... ...... .... .......... . ..... , . .... .......... .... To fnco page 160 5!). Horseshoo Uttfion .. .... . .. . .. .... ... : ...... ........ .. ... . .............. . To faco pogo 162 60. Al covo Lands und llad-lnuds, south of the Uinta Mount ains .... .. . . ........ To faco pogo 167 61. Bil'(l's-cyc View of tho Torrnce Canons ... .. .....•••... . . . .... •. • .. . . • .. . . To faco pago 170 G2. llird's-eyo View of the Tooru'-pin Wu-near' Tu-woap' .... ... ....... . ....... To fnco pngo 175 6:1. View of Mttrblo Cnflon .... . .. ....... ............... . .... . ............. .. To fnco pugo 180 64. Section ncross n simplo fitnlt ........ . .... .. ..... . . .. .. . .................. To ftteo pogo 1f.:!:J 65. Soct.iou ucr·oi'ls n fault with walls widely sepnmtod ............... . ........ To faco pago 18:3 66. Section across a fault with walls widely sepamted .... .. .... .............. To f:te~;:~ page l f.:!:l 67. A Monoclinal Fold ........... . ............ ........................... . .. To fnce pnge 184 68. l<'anH and folcl in samo cross section . .......................... .......... 'l'o fu co pago 184 6!), Section ncrosR a bmnching fuul t ... . .. .. ........... .. ................... . 'ro faco pogo 184 iO. Fu.nlt with thrown beds fioxod downward ................................ To face pago 184 71. Fault witb thrown beds flexed npwaril ....................... . . ..... . .... To fnco pngo 184 72. Bird's-oyo vi ow of the Gmud Canon .. ........ .. ......................... To fuco pn~o 187 73. Section across the plateaus north of tlle Gmnd Canon .... ....•.... . .. . . . . To face pu~to 1!)0 74. llird's-oyo view of cliflii of erosion ................ .. ................... ... To faco pu~o 190 75. Binl~s-oyo vi ow of elitl's of er_osion thrown forward by n. fault . .•..... .• . . To face pago 1!)1 76. SectiOn t-hrough tho Echo ChiTs . .......... .. ... .. ........................ To face Pll"O 191 77. Section ncrosslionso RockVnllcy ....... . .................... .......... . To fuco pn~o 192 78. The Grand Cufion of tho Colorado ................... .. ................ . . To faco pago 195 70. Section of wall in ~ho Grnncl Canon ................................. _ •••. To face page 212 80. Tholomomys Cllllsms ........................................ . .......... To face p1~ge 265 PREFACE. In the summer of 1867, with a small party of naturalists, students, and amateurs like myself, I visited the mountain region of Colorado T erritory. vVhile iu l\1iddle Park, I explored a little cal1on, through which the Grand H.ivor runs, immediately below the well-known wateriug-placo, "Middle P ark Hot Springs." Lator in the fall I pa!:ised through Codar Canon, the gorge by which the Grand loaves the park 'rho ro ult of the summer's stu~y was to kindle a desire to explore the canons of the Grand, Green, and Colorado Rivers, and the next summer I organized an expedition with the intentiou of penetrating still farther into that canon country. Al:i soon as the snows were melted, so that the main range coHld bo crossed, I went ovor into .lVIiddlo Park, and proceoued thence down the Grand to the hoad of Cedar Cation, then across tlte Park range by 0 oro's Pass, and in October found myself and party encamped on the White River, about a hund.red and twenty milel:l above its mouth. At that poiut I built cabins, aud esta blished win ter quarters, intending to occupy tho cold season, al:l far al:l possible, in exploring tho adjacent country. The winter of 1868- '69 proved favora ble to my purposes, and several excursions wero made, southward to tho Grand, down the White to the Green River, northward to the Yampa, and around the Uinta l\fou11t.ai ns. During thes~ several oxcw·sions, I seized every opportunity to study the canons through which these upper streams ruu, and, while thus engaged, formed plans for tho exploration of the cailonl:l of the Colorado. Since that time 1 have been engaged in executing these plans, sometimes employed iu the fie ld, sometimel:l in the oilice. Begun originally as an exploration, the. work ha.l:l finally Jevelopod iuto a survey embracing the geography, geology, ethnography, aud uatural histo1·y uf tho country, and a uumber of geutlomeu have, from timo to t.iuw, U.l:lHiHte<lme i11 th<· work. ll COL |
