INDEX TO VOLUME l8 



717 



Page 

 Willis, Bailey, cited on, liemispheric 



distributions of land and water. . . 408 

 origin of ttie Mauch Cliunk 



formation 464 



Paleozoic Appalachia 399 



— , Memoir of Israel C. Russell bv . 582-592 



— .Record of remarks by 610,613,621 



— , Title of paper by 612, 624 



Wilton, New Hampshire, Double gla- 



ciation at 509 



WiNCHELL, N. H., cited on correlation 



of the Galena series 183 



■ — .Reference to descriptions by 192 



Windy Gap coal bed named by Doctor 



White 110 



— limestone, Occurrence of 110 



WiNSLOw, Arthur, cited on Mauch 



Chunk formation 453 



— , Sections of Mauch Chunk shales 



given by 453 



WiNTHROP, Massachusetts, Stratified 



clay near 509 



Wirt county, West Virginia, Coal beds 



in 91 



Wisconsin age, Evidence of 545-548 



— clays (low level), Character of.... 553 



— deposits, Correlation of. See table.. 512 



— gravels, Pre-Wisconsin gravels dis- 



tinguished from 527-528 



— ice-sheet, Arguments against oscil- 



lating margin of 554 



— retreatal deposits, Character of.... 552 



— till. Description of 544-553 



• , Distinction from beach deposits 



of 554 



iceberg draped material of. 554 



, Maine, View showing 28 



, Occurrence on Long island of . . 5^5 



.Views showing relations of 538 



— , Trenton and Galena limestones of . . 



179-194 

 WOLPBBORODGH, Double glaciation at. . 509 

 WoLPr, John E., Memoir of Nathaniel 



Southgate Shaler by 592-609 



Woodman, J. Edmund; Probable age of 



the Meguma (gold-bearing) series 



of Nova Scotia (abstract) .... 636-637 

 Woodward, C. M., Address delivered by. 610 

 WooDWOUTH, J. B., Acknowledgments 



to 304 



— cited on age of gravel deposits 527 



— • cited on the clays of southeastern 



Massachusetts 507 



— , Title of paper by 641, 654 



Wool county, West Virginia, Coal beds 



in 141 



Page 

 Wool county, West Virginia, Shale in. 92 

 WORTHEN, A. H., Reference to descrip- 

 tions by 192 



Wright, P. E. and C. W., Title of 



paper by 623 



— , Record of remarks by 624 



— , Title of paper by 637 



Wright, G. Frederick; Lebanon gla- 

 cier (abstract^ 637 



— , Record of remarks by 642 



Wyoming, Geologic structure in.. 395,398 



Yakdtat Bay inlet. Changes in gla- 

 ciers of 261 



, Galiano glacier of... 261,267,269 



, Tidal glaciers discharging 



into 261 



— — region, Alaska, Location and 



topography of 258, 259 



— , Recent advance of glaciers 



in 257-286 



, Atrevida glacier of.. 261,269,270 



, Haenke glacier of 266, 267 



— ■ , Lucia and Atrevida glaciers 



of 1 260,261 



, Malaspina glacier of 258-260 



, Marvine glacier of 273-277 



, Orange glacier of 265 



— . , Summary of observations on 



glaciers of 277, 278 



. Turner glacier of 265, 266 



Yar.mouth interglacial stage, Erosion 



dating from 513 



Yellowstone National Park, Occur- 

 rence of carbon dioxide in 11 



Toldia glacialis. Location of 522-523 



— (PortlancHea) Iticida, Location of ._ ._ 



— mytalis. Location of 522-523 



— pygmcra, Location of 5i-2-.523 



— ■ sapotilla. Location of 522-523 



York, Maine. Old till exposures at... 516 

 Ypsilanti, Michigan, Occurrence of 



scaurs In 335 



Yukon plateau. Location and character 



of 397, 398 



Zircon, Occurrence in Adirondack sye- 

 nite of •. • ■ 479 



Zdni Salt lake. New Mexico, Location 



and character of . . .- 217 



, Probable cause of forma- 

 tion of 220 



LTX — Bull. Geol. Soc. Am., Vol. 18, 1900 



