Index 



Nickeliferous pyrrhotite, theories of 

 origin, 228. 



Nipissing diabase, 255; analyses of 

 by Miller and Knight, 298. 



Noble, L. F., quoted, 362. 



Nordmann, A., cited, 73, 74. 



Norite of Cuyamaca region, descrip- 

 tion, 195. 



Note on an Hipparion Tooth, from 

 the Siestan Deposits of the 

 Berkeley Hills, California, 19-21. 



Notes on Peccary Remains from 

 Rancho La Brea, 9-17. 



Odobenidae, 101; ancestral, 46 ff. 



Odobenotherium, 104. 



Odostomia santana, description, 428; 

 compared with 0.? inornata, 

 428; figure of, opp. 458. 



Old Woman Springs, California, sand 

 dune country east of, 340. 



Olenellus fremonti, 6. 



Oligocene, the John Day, of Logan 

 Butte, Eastern Oregon, A Mar- 

 supial from, 311-317. 



Oligocene (Rupelian) , Middle, ances- 

 tral Phoeidae of, in Holland, 69. 



Oliva simondsi, description of, 159; 

 compared with O. peruviana con- 

 f ormis, 159; figures of, opp. 174. 



Olivine gabbro of Cuyamaca region, 

 description, 195. 



Olivine norite of Cuyamaca region, 

 description of, 195. 



Ore body at Friday Mine, relation to 

 enclosing rocks, 225; origin, 227. 



Ores of the Cobalt District, Ontario, 

 Canada, Genesis of, 253-310. 



Orindan deposits of Berkeley Hills, 

 scarcity of mammalian remains 

 in, 19. 



Osborn, H. F., quoted, 68; cited, 78. 

 Osbum, R. C, cited, 97. 

 Osmosis, 290. 



Ostrea crescentica, description, 420; 

 compared with O. skidgatensis, 

 420; figures of, opp. 438. 

 taxidonta, description, 426; com- 

 pared with O. lurida and O. aeu- 

 tirostris, 420. 

 Ostrea titan, 45. 

 Ostwald, Wm, cited, 301. 

 Ostwald, Wolfgang, cited, 289; note, 

 15. 



Otariidae, 26, 106 ; ancestral, 58 ff . 



incertae sedis, 108. 

 Packard, E. L., 413; cited, 414. 

 Page, D., cited, 79. 

 Pagophoea, 123. 

 Paleophoea, 111. 

 Paleotaria, 109. 



Panope calif ornica, description, 427; 

 figure of, opp. 454. 



Paragneiss and coarse schist of Cuya- 

 maca region, 183. 



Paul, K. M., and Andrian, F. F., cited, 

 73. 



Pease, Young, and Strand, cited, 241. 

 Peccary Remains from Rancho La 



Brea, Notes on, 9-17. 

 Pecten (?), sp.; description of, 421; 

 figure of, opp. 440. 

 (Pecten) andersoni gonicostis, de- 

 scription of, 149 ; compared 

 with P. andersoni, 149; figure 

 of, opp. 160. 

 crassicardo, 45. 



raymondi brionianus, description 

 of, 148 f . ; compared with P. 

 raymondi, 149. 

 raymondi, figures of, opp. 160. 

 (Lyropecten) riced, description of, 



148; figures of, opp. 162. 

 Tolmani Hall and Ambrose, figures 



of, opp. 164. 

 (Lyropecten) vickeryi, description, 

 148 ; figure of, opp. 166. 

 Pegmatite, of Cuyamaca region, 209 ; 

 of Friday Mine, 214; of Rock 

 Corral, 371. 

 Pegmatite dikes, 350. 

 Peratherium merriami, 312; type 

 specimen of, 312; specific char- 

 acters of, 312; compared with P. 

 fugax, Marmosa, and Didelphys, 

 312-316, passim; description, 

 313 ff.; figures of, 313, 314, 316. 

 Peridotite of Cuyamaca region, de- 

 scription, 197. 

 Peron, F., and Leseur, C. A., cited, 61. 

 Peters, K. F., cited, 74. 

 Peters, W., cited, 91. 

 Peterson Lake, Ontario, 260. 

 Phoca, 117 ff. 



sp. A., 45; compared with allodes- 



mus, 45. 

 sp. B., 45. 

 Phoeanella, 121. 



Phocid, indet., 44; compared with 

 Phoca richardii, 44; with allo- 

 desmus, 45. 



Phoeidae, 44, 109; ancestral, 66 ff. 



Phocinae, 81 ff. 



Pictet, F. J., cited, 47. 



Pinnipedia, 101; table showing varia- 

 tions in dental formulae of sub- 

 order, 84; paleontologic evidence 

 bearing on origin of, 92 ff. ; fossil 

 remains incorrectly referred to, 

 124 ff. 



Pinnipedia, fossil, known, chart show- 

 ing geographic and geologic 

 range of, following 46; a check 

 list of, 101 ff. 



Pinnipeds from Miocene and Plei- 

 stocene Deposits of California, 

 23-132. 



Pipes, The, California, 321. 



[420] 



