Index. 281 



Page. 

 Le Conte, On the origin of normal faults and structure of Basin region.. 96 



Tertiary and Post Tertiary changes in the Atlantic and Pacific coasts. 116 



Leech, Reports of United States Mint 60 



Leidy, Elotherium in California 128 



Vertebrate fossils from auriferous gravels 128 



On mastodon remains 128 



Extinct mammals from California 129 



Extinct mammalian fauna of Dakota and Nebraska 130 



Lesquereux, Report on fossil plants of the auriferous gravels 22 



Fossil plants of recent formations 63, 90 



Tertiary flora as related to Tertiary animals 98 



Levasseur, Les mines de Californie et d'Australie 158 



Levy, Les frangais en Californie 158 



Lighten, Study of river geology 134 



Lindgpen, Notes on geology of Baja California 57, 106 



Gold and silver veins of Ophir 65 



Auriferous conglomerate of Jurassic age 96 



Two Neocene rivers of California 116 



Characteristic features of California gold quartz veins 83, 118 



Silver mines of Calico, California 85 



Gold quartz veins 65, 83, 110, 118 



Granitic rocks of Pyramid Peak 97 



Replacement in gold-bearing fissure veins 110 



Auriferous gravels, etc. 121 



Granitic rocks of Sierra Nevada 132 



Lock, Gold, its occurrence 158 



Loew, Geology and mineralogical character of southern California 62 



Lopateck, Gypsum on the coast of Lower California 134 



Lower California, Notes on the geology of Baja California, by \V. Lind- 



gren 57, 106 



Geological sketch of Lower California, by S. I. Emmons 57, 117 



Geographical and physical features, by W. M. Gabb 57 



Explorations in the cape region of Baja California, by Gustav 



Eisen 57 



Some geological notes in Emory's Mexican Boundary Survey 50 



Notes on the geology of Lower California, by W. M. Gabb 22 



Geological sketches of Lower California, by Merrill 57, 76, 117 



Gold fields of, by Orcutt 134 



Eruptive rocks of, by Ritter 113 



Exploradora de la Baja California — Ramos 163 



Lucas, A flightless auk 76 



Lyman, Mines of cinnabar in Upper California 88 



Observations on California, 1848 88 



California gold region, 1849 88 



Bibliography of petroleum 158 



Mabepy, California petroleum 79 



Macfarlane, The coal regions of America 158 



Macomb, Tables of geographic positions and altitudes 62 



McGarrahan, The quicksilver mines of Panoche Grande 160 



McGillivpay, Old river beds of the Sierra Nevada 59 



Mallet, Catalogue of earthquakes 111 



Manly, Death Valley in 1847 158 



