INDEX TO VOLUME 15 



635 



Page 



Tight, W. G., Title of paper by 583 



Timpas formation, Correlation of. 446 



Tionesta coal bed, Horizon of... 67, 08, 69, 72, 73 



in Kentucky 103, 108, 109, 111 



Ohio 77, 80, 81, 82, 87 



Pennsylvania 73 



Tennessee 147 



West Virginia 172 



, Stratigraphic equivalent of 57 



— sandstone, Synonymy of. 204-205 



Titicaca Lake basin, Elevation of 584 



, Glacial phenomena in 585 



, Rainfall in 584 



Theories of ore deposition historically con- 

 sidered : Annual address by the Presi- 

 dent, S. F. Emmons 1-28 



Thorn creek, Pennsylvania, Section on 72 



Threemile creek, New York, Features of.... 236 

 Todd, J. E. ; Benton formation in eastern 



South Dakota 569-575 



— , cited on Dakota and succeeding forma- 

 tions 572, 574 



— , Record of remarks by 575, 576 



Tombolo, Definition of term 509 



Tomhickon, Pennsylvania, Coal beds near... 48 



Tongue river, Wyoming, View of 396 



Toronto, Canada, Beaches of lake Iroquois 



near 352-353 



Torrent deltas, Structure of.... 370 



Treasurer, Election of I. C. White as 531 



— , Report of 527-529 



Trenton, Ontario, Beaches of lake Iroquois 



near 254-255 



Trent river, Beaches of lake Iroquois 



near.. 356-357 



, Course and general features of... 218-219 



229-230 



, View of 226 



system and Saint Lawrence outlet ; 



Alfred W. G. Wilson 211-242 



, Description of 224-236 



, Lakes comprised in 219 



Triassic rocks, Bighorn mountains, char- 

 acter and extent of 394, 397-398, 436-441 



, black hills region 383, 386-387, 436-441 



, Hartville uplift 408, 410, 438-441 



, Laramie range 402, 403-404, 436-441 



, Rocky Mountain Front range..413, 415-424 



436-441 

 Trimble coal bed, Occurrence of, in West 



Virginia 163 



Trinidad, Colorado, Cretaceous rocks near.. 433 

 Trinity mountains, Nevada, Bed-rock com- 

 plex of 327 



, Volcanic rocks of 327, 328 



Truckee beds, Exposures of, in Humboldt 



Lake mountains 301 



Turkestan, Tian Shan mountains of, Physi- 

 ography and glaciation of, Abstract of 



paper on 554 



Turkey creek, Colorado, Cretaceous rocks 



on 430 



Turner, H. W., cited on age of granitic in- 

 trusions in Sierra Nevada 319 



dome structure in the High Sierra.. 29 



limit of post- Jurassic uplift in Sierra 



Nevada 337 



Twin coal bed, Synonymy of. 205 



. See Mercer coals. 



Twin Lakes valley, Connecticut, Structural 

 geology of 555 



Ulrich, E. O., elected Fellow 532 



University of California, Paper by A. C. 

 Lawson published by 586 



, Paper by J. C. Merriam to be pub- 

 lished by 581 



Unkpapa sandstone, Character and extent 



of. 383, 388, 442 



Upper Alton coal bed, Synonymy of 205 



Page 

 Upper Freeport coal, Occurrence of, in West 



Virginia 188, 190, 193, 196, 200 



— Mercer coal bed, Synonymy of. 205 



Vadis, West Virginia, Section at 198 



Valparaiso, Nebraska, Greenhorn limestone 



near 575 



Van Hise, C. R., Views of, on ore deposi- 

 tion 25-26 



— , and Irving, R. D., cited on secondary 



enlargement of mineral fragments 464 



Vermilion river, Benton formation on 572 



Vice-Presidents, Election of H. S. Williams 

 (First) and iSamuel Calvin (Second) as... 531 



Virginia, Pottsville formation in 147-156 



Vogt, J. H. L., Views of, on ore deposition. 24-25 

 Volcanic phenomena, Explanation of, under 

 planetesimal hypothesis 249-252 



Wadsworth coal beds, Synonymy of 206 



Wagonhound creek, Jurassic rocks on 404 



Walcott, C. D., cited on age and identity of 



Dalmanites lunatus 480 



fossils of the Dead wood formation... 38 



Ordovician rocks near Canyon City, 



Colorado 414 



Waldenstein, J. W. von, cited on bibliog- 

 raphy of ore deposition 28 



Walker, Thomas L., elected Fellow 532 



Walkeu coal bed in Tennessee 123, 137 



Wallerius, W. J., Title of work by 6 



War creek coal bed, Occurrence of, in Vir- 

 ginia 153 



Ward, Lester F., cited on Cretaceous plants 



of Black hills 389, 390, 443 



Warfield, Kentucky, Sections at... 106, 107, 169 

 Warfield coal bed, Occurrence of, in Ken- 

 tucky 107 



West Virginia 169 



, Synonymy of " 206 



Warren, C. H., becomes life member 527 



Wartburg sandstone, Occurrence of, in 



Tennessee 142, 143 



Wartman coal bed, synonymy of.... 205 



Washington, Molybdenite at Crown Point 



in 283-288 



Washington, Pennsylvania, Section at 75 



Washington coal beds, Occurrence of, in 



West Virginia 199 



Waterford road, New Hampshire, Section 



along 464 



Water fungus, Fossil, in petrified wood 



from Egypt, Abstract of paper on 550 



Watson, T. L., cited on "fall line" in 



Georgia 492 



— Title of paper by 578 



Waynesrurg, Pennsylvania, Section at 75 



Webster, West Virginia, Section at 187 



AVeed, W. H., and Emmons, S. F., Views of, 



on ore deposition 28 



— , and J. E. Spurr, Views of, on ore depo- 

 sition 28 



Weeks, F. B., elected Fellow 532 



Weidman, Samuel, elected Fellow 532 



— ; Widespread occurrence of fayalite in 

 certain igneous rocks of Wisconsin [ab- 

 stract] 551, 552 



Welch, West Virginia, Section at 155, 156 



Welch formation, Occurrence of, in Vir- 

 ginia 153 



Weller, S. B., Fossils identified by 424 



Wellsburg, West Virginia, Section at 192 



Wellston coal bed, Occurrence of, in 



Ohio 89, 90 



, Synonymy of. 206 



Werner, A. G., cited on bibliography of ore 



deposition 28 



--, Geological work of. 9, 10 



— , Views of, on ore deposition 11 



