INDEX 857 



SESSIONAL PAPER No. 25a 



Page. 



Wheeler, A. 36,45 



Whiteaves, J. F 320 



Whitney, J. D - 19,45 



Wigwam formation 103 



valley, origin of 118 



Willis, B 1, 5, 27, 28, 30, 49, 57, 66, 69, 71, 72, 73, 77, 81, 82, 83, 84, 88, 89, 90, 91, 



92, 93, 94, 97, 114, 171, 180, 216, 555, 570, 532, 591, 596, 599, 603ff., 624ff., 639. 



Wilson range 30 



Winter-talus ridge 593 



Wolf formation 150 



Wood, H 184 



Woodhead, G. S 647,658 



Xenoliths in Purcell sills 243 



Yaak range 33 



Yahk river valley, origin of 138,811 



quartzite, name withdrawn 135 



Yakinikak limestone 114 



Yellowstone plateau, origin of * 749 



Yellowstonose 441, 445, 456 



Young, G. A „ 5,338 



Zaphrentis 116,510 



Zirkel, F 223 



25a — vol. iii — 57 



