INDEX. 



499 



liquid and solid. Gray and Kamsay, 



485. 

 Raffety, C. W., Eadio -activity, 406. 

 Rays, canal, Stark and Stenberg, 84, 



405. 



— of high penetrability, Wulf, 405. 



— positive. Wien, 84; Doppler effect 

 in, Trowbridge, 245. 



— Eontgen, velocity, Marx, 187, 

 Renshaw, G., Aninial Romances. 193. 

 Reyer, Kraft, okonomische, etc., 272. 



ROCKS. 



Composition of rocks compared 



with stony metorites, Merrill, 



469. 

 Dutch Guiana, petrography, Beek- 



man, 410. 

 Gases in rocks, Chamberlin, 190. 

 Plutonic rocks, classification, 



Hatch, 411. 

 Study of, Fletcher, 490. 

 Rogers, A. F., pyrite crystals from 



Utah, 467. 

 Rontgen rays, velocity, Marx, 187. 



Scienza, Eivista di, 100. 



Sellards, E. H., types of Permian 

 insects, 151. 



Smithsonian Institution, report, 196. 



Spark spectra, Berndt, 187. 



Spencer, Herbert, Life and Letters, 

 Duncan, 99. 



Steel, permeabilities and reluctivi- 

 ties, Pierce, 273. 



Steinmann, G., Geol. Grundlagen der 

 Abstammungslehre, 341 



Stewart, A. W., Organic Chemistry, 

 337. 



Texas, chalk formation, Gordon, 369. 

 — Pelycosaurian from, Matthew, 93. 

 Thermoelectric force, influence of 



pressure upon, Horig, 338. 

 Thermometer, quartz as geologic, 



Wright and Larsen, 421. 

 Thorium, radio-activity, Ashman, 65. 

 Topographic Maps, Salisbury and 



Atwood, 265. 

 Tower, O. F., Qualitative Chemical 



Analysis, 486. 

 Trowbridge, J., Doppler effect in 



positive rays. 245. 

 Turkestan, Exploration, Pumpelly, 



413. 

 Tyler, J. M., Man in the Light of 



Evolution. 419. 



U 



Uhler, H. S., deviation of rays by 

 prisms, 223. 



Uinta Mts., glaciation, Atwood, 

 340. 



Underhill, C. R., Wireless Teleg- 

 raphy, 406. 



United States Coast Survey, report, 

 348. 



— Geol. survey publications, 86, 406 ; 

 29th Annual Report, 188. 



— magnetic tables, Bauer, 263. 



Valency, Theory of, Friend, 337. 

 Vermont geol. survey, 88. 

 Vertebrates, Origin of, Gaskell, 192. 

 Verworn, M., Allgemeine Physio- 



logie, 419. 

 Vesuvius, eruption April 1906, John- 



ston-Lavis, 410. 

 Volcanoes, see GEOLOGY. 



W 



Ward, H. L., copper oxalate in 

 analysis, 448. 



Ward, H. M., Trees, 491. 



Washburn Observatory, publica- 

 tions, 270. 



Washington, H. S., submarine 

 eruptions near Pantelleria, 131 . 



Water, amount in cloud, 262. 



Waters, artesian, of Costilla Co., 

 Colorado, Headden, 305. 



— ground, of the Indio region, Cali- 

 fornia, Mendenhall, 340. 



Watt, G., Commercial Products of 

 India, 417. 



Weathering and erosion as time- 

 measures. Leverett, 349. 



Western Australia geol. survev, 341. 



Wheeler, J. T., Zonal Belt Hypothe- 

 sis, 265. 



White, W. P., diopside, calcium 

 and magnesium metasilicates, 1. 



Wieland, G. R., revision of the Pro- 

 tostegidae, 101. 



— armored saurian from the Nio- 

 brara, 250. 



Winchell, N. H. and A. N., Optical 

 Mineralogy, 412. 



Wireless Telegraphy, Massie and 

 Underhill, 406. 



Wisconsin geol. survey, 489. 



Wright, F. E., optical study of diop- 

 side, etc. , 28 ; artificial light for 

 microscope, 98 ; new goniometer 



