INDEX TO VOLUME 21 



821 



rage 

 Tennessee, Natural bridge at Lookout 



mountain 327, 329 



— , Reference to limestone region of 



Kingston 331 



Termite nests. Relation to soil of 487 



vegetation of 488 



— structures, Age of the mounds of . . . 487 



Termites. Structures of 479-487 



— , White ants or ^ 476-496 



Tertiary crustal movements. Distribu- 

 tion of the deforming force of . . . . 219 



in the southern nemisohere. . . 



212-218 



— fold-mountains, Extent of 179-183 



of Eurasia, Figure 2, showing 



trend limits of 187 



— mountain belt. Description of... 179-183 

 .Figure 1, showing distribution 



of 182 



— (The movintain belt. Bearing of, on 



the origin of the earth's plan ; 

 Frank Bursley Taylor 179-226 



— m.ountain ranges. Map of the world 



showing, figure 7 211 



Tetracainera, n. gen 503 



— suhciineata (Hall), Figure showing 



and description of 503 



— suhtrifjona (M. & W.). Figure show- 



ing and desci'iption of 505 



Texas. Character of the Permian heds 



of northern 250 



^ Permian, C helydrosauria from 75 



— , West. Coffee creek, Baylor covinty. 

 Discovery of new genera of Per- 

 mian vertebrate in 280 



— ■ (western) and southeast New 

 Mexico, Notes on the upper car- 

 boniferous in 76 



Tidewater glaciers of Prince William 

 sound and Kenai peninsula. Alaska ; 

 U. S. Grant. (Abstract.) 20,757 



Till overlying Birds Hill esker gravel 



and sand 414 



Titles of papers and names of dispu- 

 tants , 20-26 



TiTTMANN. O. H.. cited on floating ice 



near Muir glacier 368 



Thermometer, The geologic 176 



Thermometrt, Geologic 32, 783 



Thoroddsen, Th.. cited on pjiysio- 



graphic development of Iceland. . . 718 



Todd, J. E., and Warren Upham, cited 

 on glacial lakes Agassiz and Da- 

 kota 339 



Tolman. Cyrus Fisher, Jr.. elected 



Fellow 4 



"Toronto formation," Name given bv 



T. C. Chamberlin 439 



Treasurer for 1910, William Bullock 



Clark elected 3 



Treasurer's report. William Bullock 



Clark 37-39 



TREMATOPSiDiE, Family new 278 



Triplecia ortoni beds, Anticosti island. 713 



Trochonema tricarinatinn Billings, 



Found in Romaine island 687 



Tropidoleptus (Recurrent) fauna in 



the Watkins Glen-Catatonk folio.. 300 



TuscARORA deep. The deepest abyss 



known 200 



Twenhofel, W. H., and Charles 

 ScHUCHERT ; Ordovicic-Siluric sec- 

 tion of the Mingan and Anticosti 

 islands 75, 677-716 



Twenty-second Annual Meeting, Ab- 

 stract of papers presented but not 

 published in full in preceding 

 pages, together with discussions 

 as far as preserved ; E. O. Hovey, 

 Secretary 753-788 



Page 



Tyrannosaurus, Skull of 75 



Tyrell, J. B.. cited on till overlying 



Birds Hill esker gravel and sand. . 414 



Udden, J. A., cited on dust and sand 



storms in the west 641 



— • erosion, transportation, and 



sedimentation performed by the at- 

 mosphere 638 



Ulrich, E. 0.. cited on fauna of Min- 

 gan formation 690 



— , Discussion on Ordovicic-Siluric sec- 

 tion of the Mingan and Anticosti 

 islands 75 



Permian floras in the western 



"Red beds" 75 



— elected First Vice-President Paleon- 



tological Society, 1910 72 



— , Fossils of quartzite at Geneva ten- 

 tatively determined by 527 



— quoted on faunas of the Mingan se- 



ries 693 



— ; Revision of paleozoic systems, II. . . 31 

 — - and H. P. Gushing ; Age of the 



"Calciferous" formation of the Mo- 

 hawk valley. (Abstract.) 30,780 



W. J. Sinclair ; Interdependence 



of stratigraphy and paleontology.. 73 



United States and northern Mexico, 



Arid provinces of 566 



Coast and Geodetic Survey, Ac- 

 knowledgment to 339 



Geological Survey, Reference to . . 



663, 664, 665 



field observation of 



Yakutat Bay region by 339 



— ■ maps of limestone re- 

 gions in Tennessee and Virginia. . . 331 



-Lake Survey, Survey of Niagara 



falls, 1906, by 442 



University of Chicago, Collection of 

 Permian vertebrates from Texas 

 and Oklahoma of the 281 



Ui'HAM, Warren : Birds hill : An esker 



near Winnipeg, Manitoba.. 26,407-432 



— cited on origin of eskers and kames 



in New Hampshire 418 



sealevel at stage of greatest 



glaciation 240 



— quoted on lakes Dakota and Agassiz. 239 

 — , Reference to papers on eskers and 



kames of 431 



— and J. E. Todd, cited on glacial lakes 



Agassiz and Dakota 239 



Ui'PER carboniferous in southeast New 

 Mexico and western Texas, Notes 

 on the 76 



— Cayugan of Maryland ; T. Poole 



Maynard 30, 781 



Utah archseological expedition. Dis- 

 covery of Nonnezoshi natural 



bridge by 318 



— , General map of northeastern 521 



— , Natural bridges of southeastern. . . . 317 

 — , New light on the geology of the 



Wasatch mountains 517-542 



— , Oolitic sand of Great Salt lake. . . . 645 



Van Delden Laerne, C. F., quoted on 



ants and coffee culture 456 



Van Rise, C. R., cited on "Treatise on 



metamorphism" 630, 649 



Van Horn, F. R.. Discussion on present 

 and future of natural gas fields in 

 the northern Appalachians 34 



— ; Local anticlines in the Chagrin 

 shales at Cleveland, Ohio. (Ab- 

 stract.) 24. 771-773 



Van't Hofp's (J. H.) Law, Applica- 

 tion of Vogt 175 



LVII— Bull. Geol. Soc. Am., Vol. 21, 1909 



