INDEX TO VOLUME 11 



649 



Page 

 Siluro-Devonic contact in Erie county, New 



York ; A. W. Grabau 347 



Silver, Secondary deposition of 200 



Singhof, , Rock analysis by 413 



Slichter, C. S., oblateness-of spheroid rotat- 

 ing in 5% hours calculated by 85 



Sloths, Ground, in the California Quater- 

 nary 612 



Smith, George, cited on secondary enrich- 

 ment of silver veins 202 



Smith, G. O., Discussion by, on landslides... 583 



— and G. C. Curtis ; Camasland : a valley 



remnant 217 



, Title of paper by 580 



— and W. C. Mendenhall ; Tertiary granite 



in the northern Cascades 223 



, Title of paper by 596 



Smith, W. S. Tangier, Title of paper by 615 



Snoqualmie pass, Washington, Characters 



and occurrences of granite in ; 226 



, Fossil plants from 224 



, Geology of region near ■. 224 



, Metamorphism of granites in 226 



sedimentary rocks in 227 



, Plutonic rocks in 225 



, Sedimentary rocks in 224 



, Volcanic rocks near 225 



South Dakota, Erosion forms in Harney 



Peak district of.. 581 



Sodalite-syenite, Analysis of. 413 



Spain, Copper in pyrite deposits of 198, 199 



Spencer, A. C, cited on petrography of 



Wichita Mountain region 128 



— , Commuting of dues by 515 



— , Record of remarks by 592 



— , Title of paper by 593 



Spencer, Herbert, cited on formation of 



intercontinental zone 86 



Spirifer eriensis, Description of. 366 



— , Figures of 374 



Spurr, J. E., cited on occurrence of native 



silver 189 



— , quoted on silver ore of Aspen 202 



Stanley-Brown, J., elected Editor 520 



— , Editor's report by 517 



Stanton, T. W., Fossils identified by 385 



— , Record of remarks by 595 



— , Title of paper by 604 



Stevenson, J. J., quoted on Lower Helder- 



berg group in Virginia 272 



the Oriskany in Virginia 317 



— , Record of remarks by 592, 594 



— ; The section at Schoharie, New York 6 



Stilbite, Occurrence of, at Golden, Colo- 

 rado 472 



Stockton coal, Fossil plants from 168 



, Stratigraphic position of. 170 



Stromeyer, F., cited on analysis of garnet 



from Magnet Cove 401 



Stur, D., cited on the Westphalian series.... 167 

 Sulphide enrichment of mineral veins, 



Zones of 180 



— ores, Mineral veins enriched by 179 



, Mode of occurrence of deposits of sec- 

 ondary 194 



Sufss, E., cited on origin of Great Basin to- 

 pography 91 



— ; The asymmetry of the northern hemi- 

 sphere , 96 



Switzerland, Glacial erosion in the Aar val- 

 ley of 588 



Taff, Joseph, quoted on Lower Helderberg 



rocks in Indian Territory 273 



Talmage, J. E , Titles of papers by 614, 615 



Tantalus craters, Oahu, Description of. 41 



Tarr, R. P., Acknowledgments to 433 



Tarr, R. S., cited on mount Schurman nun- 

 atak 446 



— ; Glaciation of mount Ktaadn, Maine 433 



Page 



Tarr, R. S., Title of paper by 605 



Taylor, W. P., cited on the contraetional 



hypothesis 83 



Teall, J. J. H., cited on liquid solutions.. 409, 411 



— and Dakyns cited on differentiation of 



magmas 407 



Home cited on borolanite 415 



Tentaculite limestone, Fossils of 249 



. See also Manlius limestone. 



Tennessee, Camden chert in 319 



— , Helderberg group in 272 



— , Oriskany formation in 319 



Tertiary formations, Wichita mountains, 



Occurrences of 141 



, Rocky Mountain region, Composition 



of 598 



— geology of Oahu, Notes on ; W. H. Dall... 57 



— granite in the northern Cascades ; G. O. 



Smith and W. C. Mendenhall 223 



Tetrahedral earth and zone of the inter- 

 continental seas; B. K. Emerson 61 



— — , Arguments in favor of 67 



, Geodetic considerations of 71 



, Maps of 73 



Thompson, John I., Analysis by 481 



Thomsonite, Analysis of. 469 



— , General description of. 463 



— , Types of. 464-468 



— , Mesolite and chabazite from Golden, Col- 

 orado ; H. B. Patton 461 



.Tidal stresses in earth's crust, Effects of... 80 

 Tight, W. G., Discussion by, on glacial phe- 

 nomena of central Ohio 2 



— , Record of discussion by 588 



— , Titles of papers by 583 



Tilestone fauna in Nova Scotia, Discovery 



of 342 



, Stratigraphic position of 345 



" Tilestones," Stratigraphic position of 334 



Tinguaite-porphyry, Analysis of 406 



Tower, G. W., and S. F. Emmons cited on 



mineral alterations 190 



Treasurer, Report of. 515 



Trenton fossils from Wichita mountains, 



Determinations of. 144 



Triassic coal and coke of Sonora, Mexico ; 



E. T. Dumble 10 



Trippel, A., Analysis of copper ore by 196 



Trochoceras gebhardii Hall, Description of.. 371 



— , Figures of. 374 



True, F. W., Acknowledgments to 612 



Turner, H. W., Discussion by, on glacial 



erosion 591 



— , Record of remarks by 595 



Twelfth Annual Meeting, Proceedings of... 511 

 Twisden, J. F., cited on changes in position 



of the pole t 82 



Umptekite, Analysis of...'. 412 



United States Geological Survey, Photo- 

 graphs presented by 585 



National Museum, Photograpns pre- 

 sented by 586 



Upham, Warren, cited on glaciation of 



Green and Adirondack mountains 435 



glaciation of mount Ktaadn 435 



— , Title of paper by 2 



Upper and Lower Huronian in Ontario; A. 

 P. Coleman 107 



— Oriskany fossils, List of. 303, 324 



— Silurian formations, Table of English 



and American equivalents 251 



, Fossils of the Downtownian formation 



of 248 



, Murchison's classification of. 245, 246 



rocks of Erie county, New York, Di- 

 visions of 349 



, Upper limits of 247 



Urtite, Analysis of. 412 



Ussing, N. V., Rock analysis by 413 



