Index 



Pipes fanglomerate, 344, 379; age of, 

 380. 



Platygonus, possibly n. sp. or n. 

 subsp., 10 ff. ; compared with 

 Mylohyus, Tayassu, P. leptor- 

 hinus, P. compressus, P. alemani, 

 P. vetus, 10-15, passim; figures 

 of, 11, 13, 16; skull of, 10; denti- 

 tion of, 13; limb elements of, 

 15. 



Platyphoca, 117. 

 Playas, 340. 



Pleistocene, ancestral Phocidae of, 

 in America and Europe, 78 ff. 



Pliocene (Scaldisian) , Middle, an- 

 cestral Phocidae of, in Antwerp 

 basin, 75; (Astian), Upper, an- 

 cestral Phocidae of, in Europe 

 and Egypt, 75 ff. 



Pocock, R, 1, cited, 98. 



Polydymite of Friday Mine, 216. 



Pontolis, 106. 



Posepny, P., cited, 235, 282, 293. 

 Postcarboniferous granites in Mohave 



Desert, 7. 

 Potato sandstone, 344, 374, 395. 

 Potrero Caiion, catchment area at, 



341. 



Pre-Cambrian granite in Bristol 

 Mountain, 3, 7. 



Pristiphoea, 110. 



Prophoea, 116. 



Prorosmaras, 101. 



Providence Range, California, 2. 



Pyrrhotite, of Friday Mine, 215; syn- 

 geneic origin of, 229 ff. ; as ap- 

 plied to Friday Mine deposit, 

 238; epigenetic origin of, 235 ff.; 

 theories involving replacement, 

 as applied to Friday Mine de- 

 posit, 239 ff.; intrusive sulphide 

 theory of origin of, 237. 



Quaternary faults of San Bernardino 

 Mountains, 396. 



Quaternary fanglomerates of San 

 Bernardino Mountains, 384. 



Quartz diorite of Cuyamaca region, 

 age, 192. 



Quartz gabbro of Cuyamaca region, 

 description, 199. 



Quartz-mica-schist of Cuyamaca re- 

 gion, 182. 



Quartz norite of Cuyamaca region, 

 description, 199. 



Quartzite of Cuyamaca region, 183. 



Rabbit Springs, California, green 

 vegetation near, 340. 



Racovitza, E. G., cited, 83. 



Raneho La Brea, California, 9. 



Ransome, F. L., cited, 362, note 14, 

 363, note 17. 



Rattlesnake Canon, alluvial fan at, 

 340. 



Rattlesnake Creek, granite of, 371. 



Rattlesnake Pliocene deposits, resem- 

 blance of beds at Logan Butte 

 to, 312. 



Raywood Flat, California, 330, 389; 

 composition of ridge north of, 

 349. 



Rhoads, S. N., cited, 51. 

 Rickard, T. A., cited, 282. 

 Robert, E., cited, 80. 

 Rock alteration in Cuyamaca region, 

 204. 



Rock types in Cuyamaca region, re- 

 lation between, 205. 



Rock Corral, California, alluvial fan 

 at, 340'. 



Rocks of Friday Mine, 213. 



Rogers, A. F., and Tolman, C. F., Jr., 

 cited, 228; quoted, 236, 237. 



Roscoe and Schorlemmer, quoted, 296. 



Rose Mine, California, limestone of, 

 355; ore of, 410. 



Rosenbusch, H., cited, 186. 



Royal Ontario Nickel Commission, 

 cited, 228. 



Rutton, L., cited, 48, 49, 50, 54. 



Salt, beds of near Bristol Mountain, 2. 



San Andreas fault, 342, 399, 403, 

 406. 



San Bernardino Mountains North of 

 San Gorgonio Pass, Geology of, 

 319^11. 



San Bernardino Mountains, Califor- 

 nia, 320; glacial features of, 335 ; 

 structure of, 393 ff.; geological 

 history of, 406 ; stereogram of, 

 407; ore deposits of, 409; geo- 

 logic structural sections through, 

 following plates after 411; geo- 

 logical map of, following plates 

 after 411. 



San Gabriel Range, California, 320; 

 contrasted with San Bernardino 

 Range, 322, 



San Gorgonio Mountain, California, 

 321, 324; weathering granite at, 

 figure of, 325; rocks of, 347. 



San Gorgonio River, 327; section 

 west of, figure of, 376. 



San Jacinto Mountains, California, 

 401. 



San Pablo Bay region, California, 



Briones formation of, 137. 

 San Pablo formation, Lower, 134; 



(Cierbo), on southwest side of 



Mt. Diablo, 138. 

 San Pablo group, classification of 



Briones with, 134. 

 Sandstone, Potato, 344, 374, 395. 

 Santa Ana Mountains, California, 



New Species from the Cretaceous 



of, 413-462. 

 Santa Ana sandstone, 344, 378. 

 Santa Margarita, classed under San 



Pablo group, 134. 



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