XYI 
ILLUSTRATIONS. 
Page. 
Vein of Feldspar traversing the granite_____ 200 
Segregated veins of feldspar------ 203 
Local section near station 183___-........ 204 
Section across the valley of Tejon creek........ 207 
Section north and south near the summit of the Canada de las Uvas----- 210 
Channels in the slope of the Great Basin__ 215 
Vegetation of the slope of the basin near the Cajon Pass. Charles Koppel____ 226 
Granite furrowed and polished by moving sand_______ 231 
Section of the sand hills covering the hank....-.-.... 241 
Section of the sand hills_ 242 
Deposition of the sand on the lee side of obstacles_____.._ 243 
Irregular surface of limestone exposed by mining-......... 255 
Placer mining by the hydraulic method, Michigan City. From a daguerreotype... 265 
Ideal section of a mining claim......... 266 
Section of the hill-side at Georgetown.......... 272 
River Canon, valley of erosion in slate.... 278 
Reverberatory furnace for extracting crude antimony___ 293 
Furnace for the extraction of crude antimony..-...... 295 
Outcrop of a great quartz vein__________ 297 
Crystal of tourmaline_ 304 
Crystals of andalusite or made_____ 305 
