INDEX. 



893 



Page. 



Ulmus rhamnifolia? Ward 712 



Unio sp. undet 632 



Upper Geyser Uasin, rhyuliteof 372-374 



Urticacere, descriptions of species of 712-71S 



"V. 



Vesuvius (Mount), profile of 232 



Vilmrnum rotundifolium Lx 662, 794, 796 



Titaceje. descriptions of species of 741 



Volcanic rocks of Absaroka Range and Two Ocean 



Plateau " 269-325 



Volsella subimbricata "White 617 



W. 



Walcott, C. D., descriptions of Cambrian fossils by. 440-478 



"Wall Canyon, fossils from 480 



"Ward, L. F.,paleobotanical work by 652 



Waverly group, fossils of 489, 491 



"Weed, "W. H-, cited 53, 206 



"Weed and Pirsson, cited 353 



White, C A., cited 487,498,601 



"Whitfield, J. E., chemical analyses made by 61, 



65, 70, 81, 115, 135, 163, 325, 329, 340, 347 



cittd 460 



Wildcat Peak, descriptive geology of 169-170 



Page. 



Williams, G. H., cited 63 



Windy Mountain, dikes of 230 



Wolverine Creek, rocks of 381-L82 



flora of : 183 



Woodwardia areolata (L.) Moore 666 



Woodwardia crenata Kn 656 



Woodwardia latiloba Lx 657, 666 



"Woodwardia prearcolata n. sp 665-666, 79S 



Wright Geo. M., sections made by 36,38 



Y. 



Yancey's Fossil Forest, description of 756-757 



Yellowstone Lake, rhyolite of shores of 382-3S5 



Yellowstone River, rocks of Grand Canyon of 389-390 



rhyolite near 388-389 



Yogo Peak, Montana, analyses of igneous rocks 



from 354 



Z. 



Zircon, occurrence of 4U1 



Zizyphus meekii Lx 660 



Zizyphus serrulata Ward 740, S42 



Zaconthoides spinosus 4G6 



Zacontboides typicalis 4C6 



Zaconthoides sp. undet 465-466, 47$ 



