INDEX. 



615 



Tip Top, Md., fossils from 54B-546, 583-589 



Tlaxiaco, Mex., Lower Potomac fossils from near . . . 340, 578 

 Todd, Aurelius, fossil locality discovered by 47 



fossils collected by 48, 57 



Todds Gulch, Oreg., fossil plants from 48, 51-52 



location of 48 



Todites Williamsoni Brongii 68 



Trias, fossils from 13-46; Pis. I-III 



section through 40, 42 



silicified wood from 15 



vertebrate fossils from 14-15 



Trinity Center, Cal., fossil plants from 147 



Trinity formation, age of 341 



flora of the 326-342 



Trout Creek, Mont., fossils from 282 



Tuba, Ariz., fossil logs from 37 



rocks near 28 



Tuscaloosa beds, correlation of 342 



fossils in 366 



occurrence of 391' 



Tympanophora racanosa L. & H 59 



simplex L & H 59 



Tyson, Philip T., cycads collected by 369-370, 408-411 



on Maryland paleontology 348-350 



Tysonia marylandica Font. 406, 416 



U. 



Uhler, P. K., fossil plants collected by 557 



on Albipurean formation 364, 375, 398 



on Maryland cycads 369-370 



on Maryland geology 3.57, 364, 372, 375 



Union Tunnel, Baltimore, fossil plants from 570, 583-589 



Unkpapa sandstone, correlation of 205 



cycads collected from 326 



Variegated marls, Arizona. .See Marls, variegated. 

 Variegated sandstones, occurrence and character of.. 28, 

 39-40, 42, 44-45 



Vinegar Hill, Md., fossil plants from 547-554 



Virginia, fossil localities in 478-516 



lignites and fossil wood from 344 



Older Potomac formation of 474-598 



correlation of 580-599 



fossil plants from 474-516; Pis. CVII-CXII 



region of, map showing Pl.LXXX 



section of, diagram showing .598 



Virginia and Maryland, Older Potomac of, comparison 



of 574-576 



Vitiphyllum mnltifldum Font . . . 548, 550, ooS-554, 558, 566- 



566, 569, 588, 591, 594, 598; PI. CXIX, Figs. 2-5 



parvifolium Font 558, .569, .588, 594 



W. 



Ward's localities, location of 487-488, 490 



Washington, D. C, excavations at 354,374,381,382 



fossils from 374, 



379-382, 616-519, 683-589; Pis. LXXIV-LXXVI 



section at 386 



figure showing 387 



See also Reservoir; Sixteenth street. 



Wealden formation, age of 350, 676-677 



correlation of 368 



definition of 371 



occurrence of 367 



of Hanover, fossil plants from 161 



Page. 



Weed, Walter H., fossil plants found by 279,282 



Weldon, N. C, rocks at 391 



Wells, H. F., fossils collected by 203, 316 



West Virginia, fossil plants from 169 



Whipple, Lieutenant, creeks named by 20, 22 



exploration by 31 



fossil wood collected by 31 



White, C. A., on Potomac formation 374 



on Texas geology 329 



White, David, fossil plants collected by 370, 482-483, 483 



White House Bluff, Va., fossil plants from 381, 



383, 385, 487, 682-689 



Widdringtonites Dunkeri (Ett. ) Schimp 264 



Wieland, George R. , microscopic study of 316 



section by, on foliage of Cycadella 198-203 



on Jurassic cycads of Black Hills 204-207 



on stratigraphy and paleontology of Black 



Hills rim 317-326 



Wilcox's ranch, California, fossil from 216 



Williams, Ariz., fossil wood found near 35-26 



Williams, R. S., fossils discovered by 277-279 



Williamsonia Carruthers 118-120; PI. XXIX 



?Bibbinsi Ward 648,554,688,596; PI. CXV, Fig. 11 



?gallinaceaWard 484,485,588; PI. CVII. rig.4 



gigas (L. & H.) Carr 136, 138, 198-199. 201-203 



gigas (Willn.) Carr 119 



oregonensisFont.... 118-119,138,140; PI. XXIX, Fig. 6 



?sp.Font 119,140; No. 1, PI. XXIX, Fig. 7 



?.sp. Font., No. 2 (ci, 6, c) 119-liO, 141; 



PI. XXIX, Figs. 8-12 



Willoughby, W. F., aidof 382 



Winslow, Ariz., section through 40-41 



Wolf Creek, Tex., fossils at.. 338 



Woman's College, cycad collections of 404-408; 



Pis. LXXXVII-LXXXIX 

 Wood, petrified or silicified. See Petrified wood. 



Woodbridge, Va. , fossil plants from 485, 582-689 



Woodruff Butte, Ariz., section through 42-43 



Woodward, Karl, silicified trunk found by 382 



Woodworth, J. B., report of 137 



Woolfe, Henry D., fossil plants collected by 146, 



163, 161, 164, 167, 168 



Wyoming, Jurassic cycads from, collections of 179- 



182, 203-204, 273 



Jurassic cycads from, descriptions of 182-203 



geology and paleontology of 204-208 



section in 205-206 



Yorkshire, comparison of fossil plants from Oregon 



and 143-144 



Younger Mesozoic, investigation into 368-359 



Yuccites Schimper & Mougeot 135-136 



hettangensis Sap.? 135- 136, 



141; PI. XXXVII, Figs. 1,2 



Zamia 207,247,549 



angustifolia Jacq 201 



gigas L. & H 136 



lanceolata L. & H 110 



longi/olia Brongn 113 



ta.xlnaL. &H 98 



Washingtoniana Ward... 491,503,588; PI. CXI, Figs. 1,2 



Zamiophyllrun Nathorst 244,249 



Buchianum (Ett.) Nath 249 



