Index 



Trophon daviesi, description, 155; 



compared with T. ponderosum 



and T. carisaensis, 156. 

 gracilis clarki, description of, 156; 

 compared with Trophon graci- 

 lis, 156; figures of, opp. 170. 

 True, F. W., cited, 31, 60, 61, 62; 



quoted, 71. 

 Turner, H. W., cited, 374. 

 Turner, W., cited, 79, 89. 

 Ugolini, R., cited, 77. 

 Van Beneden, P. J., cited, 28, 48, 50, 



52, 53, 54, 59, 60, 70, 71, 72, 121. 

 Van Dusen Caiion gold, 409. 

 Van Kampen, P. N., cited, 95. 

 Vaqueros formation, canine tooth 



found in, near Stage Station, 



California, 35. 

 Vaughan, Francis Edward, 319. 

 Vaughan, T. W., cited, 376. 

 Vein contents at Cobalt, 267; figure 



showing relation of content to 



dip of veins, 267. 

 Vein genesis at Cobalt, current 



theories of, 279 ff. ; by diffusion, 



295; diffusion in, 288. 

 Vein structures at Cobalt, 268. 

 Venus brioniana, description, 151; 



compared with V. conradiana 



Anderson, 151; figure of, opp. 



168. 



Vogt, J. H., cited, 230, 231, 232, 233. 



Volcan Mountain, California, 178. 



Volutoderma magna, description of, 

 432; compared with V. gabbi 

 {White), 432; figure of, opp. 460. 

 santana, description, 432; figure of, 

 opp. 458 



Wagner, G., cited, 10. 



Walcott, C. D., cited, 7, 361. 



Wall rock, assimilation of, 200. 



Wall rocks, effect of intrusion on, 

 in Cuyamaca. region, 208. 



Wanneria? Cadizensis, 6. 



Weaver, C. E., cited, 134. 



Weinsehenk, E., cited, 236. 



Whitman, Alfred R,, 253. 



Whitehead, W. L., cited, 267, 299. 



Whitewater River, California, catch- 

 ment area at, 341; structure east 

 of, 396. 



Wild Rose Canon, mineralization in. 

 409. 



Williston, S. W., cited, 10, 98. 

 Wilson, E. A., cited, 89, 91. 

 Wortman, J. L., cited, 94. 

 Wyman, J., cited, 74. 

 Young, Pease and Strand, cited, 241 

 Zalophus, 107. 



Zimmerman, K. G. H., cited, 49. 



ERRATA 



Page 207, footnote 18. For A. S. Ellis read A. J. Ellis. 



Page 214, figure 2. For 1 inch = 30 feet read 1 inch = 50 feet. 



Page 215, line 7 from bottom. For 11B read 11. 



Page 217, line 15. For fig. 18 read pi. 10, fig. 3. 



Page 240, line 29. For Plate 4 read Plate 12. 



Page 241, lines 16 and 17. For plate 13, figures 3 and 4 . . . . read plate 



13, figure 3 and plate 14, figure 1 of the present report, together 

 with two photographs of Sudbury ores (plate 13, figure 2, and plate 



14, figure 2) . . . . 



Page 366, line 25. For Terrace Quartzite read Arrastre Quartzite. 

 Page 387, line 1. For plate 24a read plate 22a. 



[423] 



