35] 



VOLUMES XXI-XXX. 



461 



GEOLOGY. 



Teratornis, a new Avian genus, 

 Miller, 28, 501. 



Terraces, aggraded, of the Rio 

 Grande, Keyes, 24, 467; in 

 Ohio, Hubbard, 25, 108; wave- 

 cut in Keuka Valley, Carney, 



23, 325- 

 Tertiary formations of the John 

 Day region, Merriani, 24, j,"]"]. 



— insects, see Insects. 



— mammal horizons of No. 

 America, Osborn, 24, 504. 



— peneplain in Arizona and 

 New Mexico, Robinson, 24, 



lOQ. 



— plants, Cockerell, see Colo- 

 rado. 



— Vertebrata, of Fayum, 

 Egypt, Catalogue, Andrews, 

 22, 465. 



Tetraceratops from Texas, Mat- 

 thew, 27, 93. 



Tidal and other problems, 

 Chamberlin, Moulton, et al., 

 28, 188. 



Time measures, weathering and 

 erosion as, Leverett, 27, 349. 



Titanotheres from the Eocene 

 and Oligocene, Osborn, 29, 90. 



Tombador escarpment in Bahia, 

 Brazil, Branner, 30, 335. 



Tonopah Mining District, Ne- 

 vada, geology, Spurr, 21, 83. 



Tooth-cusp development, Gid- 

 ley, 22, 546. 



Trias, stratigraphy of the West- 

 ern American, Smith, 24, 446. 



Triassic cephalopod genera of 

 America, Hyatt and Smith, 

 21, 253. 



— reptile Hallopus, von Huene 

 and Lull, 25, 113. 



Tribes Hill formation, age, 



Raymond, 30, 344. 

 Trilobites in the Chicago area. 



Weller, 24, 445; East-Baltic, 



Schmidt, 23, 315; 24, 445. 

 Trochilisken, Karpinsky, 23, 314. 

 Turtles, Fossil, Hay, 26, 516; 



Wieland, 27, loi. 



— from the Upper Harrison 

 beds, Loomis, 28, 17. 



LTnconformities, significance of 

 certain, Keyes, 21, 296. 



LTnionidK. from Montana Lara- 

 mie clays, Whitfield, 24, 446. 



Vertebrates, Carboniferous, of 



GEOLOGY. 



the U. S. National Museum, 

 Moodie, 29, 88. 

 — fossil, in the Amer. Museum 

 Natural History, Catalogue, 

 Hussakof, 27, 92. 

 Volcanic activity, Barus, 24, 483. 

 Volcanoes, see Volcanoes. 

 Volutilithes petrosus, Smith, 22, 



263. 

 Wasatch deposits, Loomis, 23, 



356. 

 Wyoming, Big Horn basin, 



geology, Fisher, 24, 503. 

 Yakutat coastal plain of Alaska, 



Blackwelder, 27, 459. 

 Zonal Belt Hypothesis, Wheeler, 

 27, 265. 

 Geometry, Lyman, 26, 590. 

 Geophysical research, Gibbs, 21, 



461. 

 Georgetown quadrangle, Colo- 

 rado, geology, Ball, 21, 371; 

 Spurr, Garrey and Ball, 27, 408. 

 Gesteine, Physiographie der mas- 

 sigen, Rosenbusch, 23, 394; 26, 

 583. 

 Getman, F. H., Physical Chemis- 

 try, 25, 450. 

 Gibbs' geometrical theory of re- 

 flection of light, Ewell, 24, 412. 

 Gibbs, J. W., geophysical research, 

 21, 461. 



— Scientific Papers, Bumstead 

 and Van Name, 23, 144. 



Gibbs, Wolcott, obituary notice, 

 Jackson, 27, 253. 



Gidley, J. W., tooth-cusp develop- 

 ment, 22, 546. 



Gilbert, G. K., California earth- 

 quake of 1906, 27, 48. 



Oilman, A. F., Chemical Analysis, 

 25, 450. . . 



Gilmore, C. W., Baptanodon, from 

 Wyoming, 23, 193. 



Girty, Guadalupian fauna, 27, 413. 



Glacial bowlders in Blaini forma- 

 tion, India, Holland, 27, 413. 



— history of Nantucket, Wilson, 

 23, (>7- 



— motion, theory, Willcox, 23, 

 231. 



— overflow channels in New 

 York, Carney, 25, 217. 



— period in non-glaciated regions, 

 Huntington, 25, 353. 



— studies of the Austrian Tyrol, 

 Flusin and Bernard, 30, 424. 



