VI CONTENTS. 



boulders in the Teraescal Range, 36. " Wstslies " de-scribeJ, 3G. Passes and roads 

 across the Sierra, 37. No Glaeial Markings near Mount Whitney, 38. Former 

 Glaciation at head of Kern River, 38; on King's River, 39, 40 ; on the San Joaquin, 

 41; on the Tuohunne River, 41-43. Tuolumne Canon described, 42,43; not 

 formed by Ice, 42, 43. The Hetch-Hetchy Valley, 43, 44. Former Glaciation at 

 the head of the Merced River, 44-47. Absence of signs of former Glaciation in the 

 Yoseniite Valley, 47-50. Former Glaciation of ea.stern side of Sierra Nevada near 

 head of Tuolumne, 50, 51. Moraines near Mono Lake, 50 ; perfection of, on Green 

 Eivev, 52, 53. Traces of former Glaciation less distinct North of the Tuolumne, 53. 

 Former Glaciation of the Stanislaus, 53, 54 ; at the head of the Mokelumne, 55 ; 

 at the head of the American River, 56-59 ; in Sierra and Plumas Counties, 59, 60. 

 Absence of Glacial Markings on Lassen's Peak, 61. Former Glaciers of Mount 

 Shasta, 61. What was known of the past Glaciation of the Cordilleras before the 

 California Survey was begun, 62. i'ormer Glaciation of the Great Basin Ranges, 63 ; 

 of the Wahsatch Range, 63 ; the Uinta Range, 63, 64 ; of the Rocky Mountains, 

 64-72 ; in the Upper Arkansas Valley, 64 ; in Colorado generally, 65, 66 ; in the 

 Middle Park, 67; around North Park, 67; about the Head of the Yellowstone, 

 69 ; in tlie Wind River Range, 71 ; absence of Drift in the Black Hills, 71, 72. — 

 Defence of the Statement published by the Geological Survey, in 1866, iu 

 regard to absence of Northern Drift iu the Cordilleras, 7.?-'J2. Former Glaci- 

 ation of Nevada and Oreguii, 74, 75 ; of Washington Territory, 76 ; of British 

 Coluraliia, 76-92. Hector's Results, 76, 77. G. M. Dawson's Observations on 

 the Fraser, 79-80. Dall's work in Alaska, 81, 82. —Glacial Geology of Van- 

 couver Island discussed, 82-87 ; North of Vancouver Island, 87-90. Daw- 

 son's Views controverted, 90-92. Non-glacial Origin of the larger Californian 

 Lakes, 93-95. Moraine Lakes in the Sierra, 95. Lakes at very higli altitudes, 

 96. Freshness of Glacial INIarkings in the Sierra, 96, 97. — Forms of Valleys 

 and Canous discussed, 97-99. 



CHAPTER 11. 



THE DESICCATION OF LATER GEOLOGICAL TIMES. 



SECTION L 



iNTROnrCTORY 101, 102 



SECTION n. 



The Drying up of the L.\kes of the Western side of the Xouth American 



Continent 103-120 



Great Salt Lake, 103, 104. Depression in Southern California, 104, 105. Death 

 Valli'v, 105. Mono Lake, 106. Mr. Gilbert's Views, 106, 107. — Discussion of 

 Evidence furnished by the Fortieth Parallel Survey in regard to Desiccation 

 in the Great Basin and Rocky Mountains, 108-119. Great Salt Lake and Lake 

 Bonnevillr, 109. Lake Lahontan, 109-1 10. The Great Basin Lakes, 110. Brit- 

 ish Columbia, 1 1 2. Former abundance of Lakes in the Cordilleras, 112. — Pre- 

 glacial Desiccation in the Cordilleras, 113-120. Eocene Lakes, 116. Miocene 

 Lakes, 117, 118. Pliocene and Post-pliocene Lakes, 118, 119. The Parks, 120. 



