INDEX. 



477 



Philippine Islands, Bureau of Sci- 

 ence, Freer, 322 ; report of Weather 

 Bureau, Algue, 76. 



Photographic Exposure Becord, 471. 



— plates, light impressions, Eykman 

 and Trivelli, 143. 



Physical Phenomena, modern theory, 

 Eighi, 463. 



Pickering-, W. H., lunar and Hawai- 

 ian features, 228. 



Pilcomayo Biver, Lange, 397. 



Pirsson, L. V., geology of Bed Hill, 

 N. H, 257, 433. 



Platinum, occurrence in U. S., 319. 



Queensland, volcanic rocks, Jensen, 

 70. 



R 



Rabl, Organbildende Substanzen, 

 468 



Radio-active elements, disintegra- 

 tion products, Boltwood, 77. 



— matter in earth and air, Blanc, 385. 



— Transformations, Butherford, 64. 



— Ions, etc., Bighi, 463. 

 Randall, D. L., titration of mer- 



curous salts, 137. 



Ransome, F. L , Cripple Greek, 466. 



Raymond, P. E., Upper Devonian 

 fauna with Clymenia, 116. 



Rice, W. N., geology of Connec- 

 ticut, 385. 



Richards, R. W., Mineral Charac- 

 ters 232. 



Ries,H., Clays, 71. 



Righi, A., Badio-activity, etc., 463. 



Rignano, E., Centi-oepigenesis, 468. 



Robinson, "H. H., geol. map of Con- 

 necticut, 392. 



Rock Minerals, Iddings, 152. 



ROCKS. 



Alkaline rocks of eastern Africa, 

 Arsandaux, 230. 



Diabase dike in Potsdam sandstone, 

 Virginia. Watson, 89. 



Gesteine, Physiographie der massi- 

 gen, Bosenbusch, 394. 



Laterites, origin, Maclaren, 229. 



Mount Yamaska, Quebec, petrog- 

 raphy, Young, 69. 



Petrography of Bed Hill, N. H., 

 Pirsson and Washington, 257, 433. 



Schists, crystalline, Grubenmann, 



150. 

 Volcanic rocks, central Italy, Wash- 

 ington, 68 ; of Queensland, Jen- 

 sen, 70. 

 Yamaskite, 70. 

 Rocks and Bock-weathering, Merrill 



149. 

 Roman comagmatic region, Washing- 

 ton, 68. 

 Rontgen rays, energy of, Carter, 143. 



— spectrum and absorption, Ad- 

 ams, 9. 



— transmission, Adams, 375. 



— wave-length, Van der Waals,384. 



Rosenbusch, H., Physiographie, 394. 



Rutherford, E., Badio-active Trans- 

 formations, 64. 



Salz, das, von Buschman, 153. 



Sands, black, of Pacific slope, Day 

 and Bichards, 319. 



Schaller, W. T., composition of mo- 

 lybdic ocher, 297. 



Seismic Geology, Hobbs, 309. 



Seismological Committee, American. 

 Association, 159. 



Sellards, E. H., Bermian insects, 

 345. 



Sherrington, C. S., Integrative Ac- 

 tion of Nervous System, 73. 



Shimer, H. W., Strenuella strenua, 

 199, 319. 



Silliman Memorial Lectures, Buther- 

 ford, 64 ; Sherrington, 73. 



Smithsonian Institution, annual re- 

 ports, 74, 242. 



— C. D. Walcott Director, 160. 



Sodium vapor, rotation spectra of, 

 Wood, 64. 



Sound, perception of direction, 223. 



Spurr, J. E., ore deposits of Silver 

 Peak Quadrangle, 466. 



Stanley, F. C, Chemical composition 

 of amphibole, 23. 



Stansbie, J. H., Metallurgical Chem- 

 istry, 383. 



Stone Implements, So. Africa, John- 

 son, 465. 



Telegraph waves, wireless, Kiebitz, 



461. 

 Temperature, critical, Gregory, 221. 

 Thermometer, nitrogen, Holborn and 



Valentiner, 143. 



