Index. 



Asio aecipitrinus, 306. 



wilsonianus, 306. 

 Aspen Ridge, Idaho, 145. 

 Asphalto, Kern County, California, 

 156. 



Asterias remondi, 261. 

 Astrodapsis, 245. 



antiselli, n. var. arnoldi, 279; pi. 24. 



fernandoensis, n. sp., 279; pi. 24. 



tumidus, 248, 258, 260, 261, 266, 

 267; zone, 259. 



whitneyi, 261. 

 Atherinidae, 131. 

 Auchenia hesterna, 303. 

 Bagley, Mr., 121. 

 Bailey, Vernon, 8. 



Barite, 90; forms, 90; occurrence, 90. 

 Barker, John. 97. 



Barker 's ranch, Kern County, Cali- 

 fornia, 101, 102. 104, 108, 109, 

 111, 116, 119. 



Barra do Jardim Ceara, Brazil, pi. 

 12, opp. 139. 



Bean, Barton A., 113. 



Bear Cove, Shasta County, Califor- 

 nia, 73, 97, 98, 100. 



Bear Valley, Contra Costa County, 

 California, 274. 



Bebb, William, 291, 305, 306. 



Belshaw's ranch, John Day Valley, 

 70, 175. 



Benitoite, analyses, 350, 351; biblio- 

 graphic references, 336, 351, 371, 

 372, 374; chemical characters, 

 349; crystal symmetry, 345, 371, 

 pi. 37; crystallography, 341, 372; 

 crystals in matrix, pi. 33 (col- 

 ored plate), opp. 354. 

 deposits, conditions of deposition, 

 367; comparison with other like 

 deposits, 370; effects of earth 

 movement and pressure, 337; 

 genetic relation with serpentine, 

 369; geological surroundings, 

 334; minerals, 340; sequence of 

 events, 366; size and attitude of 

 outcrop, 339. 

 discovery, 333. 



gem, 353, natural and pleochroic 

 colors, pi. 33 (colored plate), opp. 

 354. 



habit, 344; pis. 37, 38. 



locality, 333, rocks of, 364; view 



of, pi. 28, opp. p. 336. 

 matrix (natrolite), 357; analyses, 



359; crystalline aggregate, pi. 



34, opp. 'p. 358. 



mine, open cut, pi. 31, opp. p. 340, 

 pi. 32, opp. p. 344; mining condi- 

 tions produced by earth-move- 

 ments, 339. 

 occurrence, map of, opp. p. 334; 



mode of, 336. 

 origin of name, 354. 

 paragenesis, 340, 352, 366-368. 

 {See also Aegyrine, Albite, Am- 

 phiboles, Copper minerals, Nat- 

 rolite, Neptunite). 

 physical properties, 347, 374. 

 preliminary paper, 149. 

 veins, copper minerals in, 359; 

 distribution of minerals, 368; 

 drusy interior, pi. 29 opp. p. 338; 

 country rock of. 364. 

 Bernicla canadensis, 306. 

 Beryl, 89; forms, 89; occurrence, 89. 

 Bettany, G. T., 199. 

 Big Creek, Humboldt County, Ne- 

 vada, 426. 

 Birch Creek, Wheeler County, Ore- 

 gon, 65. 

 Birtch, D. C, 279. 

 Bison, 156. 



Bison antiquus, 293, 306. 

 latifrons, 303. 



Bittium asperum, 264. 



Blaisdell. F. E., 209. 



Blake, W. P., 96, 199. 



Blasdale, Walter C, 149, 331. 



Blastomeryx borealis, 179. 



Bolinas Bay, California, 117. 



Bolinger Cafion, 255. 



Bologna Creek, 184. 



Boselaphus. 327. 



Bothus minimus, 406. 



Bovard, John F., 155, 304. 



Bowers, Stephen W., 97, 109, 128, 

 130, 271. 



Branner, John C, 139, 140. 



Brazil, Barra do Jardim Ceara, pi. 

 12, opp. p. 139; Sao Paulo, 140. 



Brea Canon, Orange County, Califor- 

 nia, 97, 125. 



Bridge Creek, Oregon, 68, 174, 184. 



Brochantite, crystal forms, 229, pi. 

 19; occurrence, 228. 



Brock Mountain, 217, 220. 



Brooks, A. H., 417, 419. 



Brown's Canon, Los Angeles County, 

 California, 97, 127, 133. 



Brushy Slope, Shasta County, Cali- 

 fornia, 97 ; camp, 217. 



Bubo virginianus, 306. 



Buena Vista Lake, 283. 



Buteo borealis, 306. 



[450] 



