Index. 115 



Le Conte, Prairie mounds of California and Oregon... 71 



Theory of formation of great features x)f the earth's surface 53 



Reply to Prof. T. Starry Hunt 53 



On lava flood of the west, and structure of the Cascade Mountains.. 64 



Ancient glaciers of Sierra Nevada in Lake A^alley 54 



Formation of coast ranges 54 



Structure and origin of mountains 55 



Volcanoes about Lake Mono — 55 



^lono volcanoes are relation to glacial epoch .-. 55 



Evidence of horizontal crushing in formation of Coast Range of 



California ..- ..- 54 



Old river-beds of California .'. .-. - 55 



Clay and marl deposits 55 



— — Metalliferous vein formation at Sulphur Bank ..- 55 



Mineral vein formation at Steamboat Springs. 55 



Genesis of metalliferous veins 55 



■ Tertiary elevation of the Sierra Nevada 56 



On the original of normal faults. 67 



Tertiary and Post Tertiary changes in the Atlantic and Pacific coasts. 58 



Leecli, Reports to United States Mint 36 



Leidy, Elotherium in California 74 



Vertebrate fossils from auriferous gravels 74 



On mastodon remains 74 



— — Extinct mammals from California 74 



Extinct mammalian fauna of Dakota and Nebraska 75 



Lesquereux, Report on fossil plants of the auriferous gravels. 12 



Fossil plants of Recent formations 52 



Levassur, Les mines de Californie et d'Australie 96 



Levy, Les fran^ais en Californie 96 



Lighten, Study of river geology... 79 



Lindgren, Notes on geology of Baja California 34,66 



Gold and silver veins of Ophir 41 



Auriferous conglomerate of Jurassic age 57 



Two Neocene rivers of California . 59 



Characteristic features of California gold quartz veins 60 



Silver mines of Calico, California 80 



Lock, Gold, its occurrence 96 



Loew, Geology and mineralogical character of Southern California.. 38 



Lopateck, Gypsum of the coast of Lower California 78 



Lower California, Notes on the geology of Baja Calif ornia, by W. Lindgren. 34, 66 



Geological sketch of Lower California, by S. I. Emmons 34, 60 



Geographical and phj'sical features, by W. M. Gabb 34 



Explorations in the cape region of Baja California, by Gustav 



Eisen. 34 



Some geological notes in Emory's Mexican Boundary Survey 28 



Notes on the geology of Lower California, by W. M. Gabb 12 



Geological sketches of Lower California, by Merrill 60 



Gold field of, by Orcutt 79 



Eruptive rocks of, by Ritter 67 



Lyman, Mines of cinnabar in Upper California .-- 50 



Observations on California, 1848 50 



California gold region, 1849 51 



McFarlane, The coal regions of America 96 



