43] 



VOLUMES I-X. 



521 



Tutorial Statics, Briggs and Bryan, 



3, 426. 

 Type specimens, value of, Marsh, 



6, 401. 



— of American Museum, New York, 

 9,69. 



Tyrrell, J. B., is land around Hud- 

 son Bay at present rising ? 2, 200 ; 

 the Cretaceous of Athabasca river, 

 5, 469. 



U 



Ultra-red rays, Kubens and Trow- 

 bridge, 3, 484. 



Ultra-violet light, effect on gases, 9, 

 381; 10, 464. 



Undulations, secondary, in Bay of 

 Fundy, Duff, 3, 406. 



Ungava, Trenton rocks at, Whit- 

 eaves, 7, 433. 



United States. See GEOL. RE- 

 PORTS ; also Coast Survey and 

 National Museum. 



Uranium radiation, Eutherford, 7, 

 238; Becquerel, 7, 471; source of, 

 Crookes, 7, 472. 



— radio-activity, Crookes, 10, 318. 



— See Becquerel rays and radio- 

 active. 



V 



Vacuum tubes for Bontgen rays, re- 

 generating, Eollins, 7, 159. 



Valentine, W., analysis of biotites 

 and amphiboles, 7, 294. 



Van Hise, C. R., North American 

 pre-Cambrian geology, 2, 205. 



— earth movement, 5, 230; meta- 

 morphism of rocks and rock flow- 

 age, 6, 75. 



Van Name, R. G., sulphocyanides 

 of copper and silver in gravimetric 

 analysis, IO, 451. 



Van't Hoff, Chimie Physique, 7, 157 ; 

 10, 461; Doppelsalzen, etc., 4, 68; 

 Arrangement of Atoms in space, 5, 

 388. _ 



Van Tieghem, new system of classi- 

 fication of phsenogamia, 4, 79. 



Vapors, fluorescence of, Wiedemann 

 and Schmidt, 1, 393. 



Vaughan, T. W., Cretaceous section 

 at El Paso, Texas, 1, 21; outlying 

 areas of the Comanche series, 4, 

 43; Lower Cretaceous Gryphasas of 

 Texas, 7, 70. 



Velocity, means of producing a con- 

 stant angular, Webster, 3, 379. 



— of seismic waves, 10, 471. 



— of electric waves, 8, 1. 



Verrill, A. E., the Opisthoteuthidae, 

 2, 74; molluscan archetype, 2, 91. 



— Ledidae and Nuculidae of N. Atlan- 

 tic coast, 3, 51 ; protective colora- 

 tion in mammals, birds, etc., 3, 

 132 ; changes in the colors of cer- 

 tain fishes, 3, 135 ; supposed giant 

 cephalopod on the Florida coast, 3, 

 79, 162, 355. 



— new American Actinians, 6, 493 ; 

 7, 41, 143, 205, 375. 



— geology of the Bermudas, 9, 313. 

 Vibration of high notes, time of, 5, 



302 ; 7, 471. 

 Viscosity of gases as affected by 

 temperature, Eayleigh, 9, 375 ; io, 

 461. 



— of mixtures of liquids, Linebarger, 



2, 331 ; Thorpe and Eodger, 4, 65. 



— of rubber, Day, 2, 342. 

 Volcanoes of North America, Bus- 

 sell, 5, 74. 



Voltameter, silver, Kahle, 7, 239. 



W 



Waddell, J., School Chemistry, io, 

 461. 



Wadsworth, F. L. O., cathetometer, 

 1, 41 ; determination of specific 

 heat by the method of mixtures, 4, 

 265. 



Wadsworth, M. E., zirkelite, 5, 153. 



Wakker, J. H., propagation of sugar- 

 cane, 1, 324. 



Walcott, C. D., genus Lingulepis, 



3, 404. 



— brachiopod fauna of Ehode Island, 



6, 327 ; fossil Medusas, 6, 509. 



— Pre-Cambrian fossiliferous forma- 

 tions, 8, 78. 



— Lower Cambrian in Atlantic Pro- 

 vince, 9, 302. 



— Eeports of IT. S. Geological Sur- 

 vey, see GEOL. REPORTS 

 (United States). 



Waldo, F., Elementary Meterology, 

 3,80. 



Walker, C. F., iodic acid in the 

 analysis of iodides, 3, 293 ; titration 

 of sodium thiosulphate with iodic 

 acid, 4, 235 ; iodine in the analysis 

 of alkalies, etc., 6, 455. 



Walker, T. L., sperrylite, 1, 110; 

 percussion figures on cleavage plates 

 of mica, 2, 5 ; etching figures on 

 triclinic minerals, 5, 176 ; crystal- 

 line symmetry of torbernite, 6, 41 ; 

 composition of igneous rocks, 6, 

 410 ; crystal symmetry of the micas, 



7, 199. 



