ILLUSTRATIONS. 
XV 
Page. 
Concretion and arch of sandstone....-.--- 9 
Table hills near the Merced river----- 12 
Section of a fossil tree---—- 12 
Foot hills of the Sierra Nevada. Drawn by Chas. Koppel.... 13 
Section showing the unconformability of slates and sandstones---. 14 
Remnant of a stratum of sandstone. Chas. Koppel- 14 
Section at the crqssing of the Chowchillas river- 16 
Table hills near Fort Miller. Chas. Koppel. 17 
Valley of the San Joaquin at Fort Miller. Chas. Koppel....... 19 
Elevated plain of basaltic lava- 21 
Section of the valley of the San Joaquin at Fort Miller.-. 22 
Terraces on King’s river........ 25 
Crest of the Sierra Nevada from King’s river.. 26 
Outliers of granite near White creek. Chas. Koppel- 29 
Section near White creek- 30 
Valley between tertiary hills_ 30 
Contact of the granite with tertiary strata___ 31 
Depot Camp, Ocoya creek........ 32 
Valley of PoSuncula river........... 35 
Fossil stems of plants_ 36 
Tejon Depot Camp. Chas. Koppel..._ 38 
Inclined strata of sandstone near San Amddio___ 45 
Section of sandstone strata.-.....-... 49 
Section near the pass of San Francisquito- 56 
Section at the camp, Mojave river- 64 
Sandstone strata overlaid by drift_______ 66 
Bluff of sandstone, Williamson’s Pass. Chas. Koppel------ 70 
_ Graphic syenite, Williamson's Pass...-........ 71 
Prickly pear near San Fernando. Chas. Koppel ......... 74 
Mission of San Gabriel..... 78 
Uplifted sandstone, Cajon Pass. Chas Koppel_____ 86 
Pointed outcrops of sandstone...-........ 87 
Rock cut by driving sand ............. 92 
Section on the east side of San Gorgono....... 93 
View from the camp near the desert. Chas. Koppel......... 94 
San Gorgono mountain, from Deep Well_____ 96 
Concretions, Colorado desert_______ 102 
Concretions lying in lines on the surface_____ 102 
Outlines presented by the mirage, Colorado desert___ 108 
Well in the desert, Alamo Mocho...1........ 110 
Valley of the Colorado, from Pilot Knob...... 113 
Chimney Peak, from Fort Yuma__ 114 
Section of the Colorado river at Fort Yuma.____ 114 
Section on the bank of the Colorado..... 115 
Barren mountains west of the desert. Charles Koppel--- 120 
Faults in strata of sandstone, Carrizo creek........... 121 
Santa Isabel. Charies Koppel....... 125 
Valley of San Pasqual. Charles Koppel___ 127 
San Diego, from the bay_____ 129 
Contorted strata, Yerba Buena island_:----- 146 
Section of sandstone and shale, Yerba Buena_ 146 
Formation of spheroids of sandstone by decomposition.......... 146 
Section of the strata at the State’s prison quarry_____ 149 
Dislocation of a bed of sandstone, State’s prison quarry___ 149 
Section of the strata at Navy Point, Benicia_ 151 
Section from San Francisco to the Pacific___ 155 
Flexure of the metamorphic strata, New Almaden...... 156 
Sandstone and shales imbedded in serpentine...... 158 
Deposition of oxide of non by percolation_'_ 168 
Fossil shark’s teeth, Ocoya creek____ 171 
Tooth of the mammoth_T______ 186 
Segregation in granite........ 200 
