INDEX. 



555 



OBITUARY. 



Boltzmann, L. 476. 



Brackenbusch, L., 194. 



Buller, Sir W. L., 352. 



Drade, P., 352. 



D wight, W. B., 352. 



Penfield, S. L. 264, 353. 



Schellwien, E., 94. 



Von der Osten Sacken, Baron C. R., 



194. 

 Ward, H. A., 194. 

 Observatory, United States Naval, 

 publications, 475. 



— Yale. Transactions, 471. 

 Ohio, Geol. Survey, 543. 

 Oklahoma geology of, .Gould, 87. 

 Optics, Meteorological, Pernter. 81 : 



Physical, Wood, 193 ; Practical, 

 Gleichen, 541. 



Ostwald W., Allgemeine Chemie, 

 460. 



Ozone, formation from oxygen, War- 

 burg and Leithauser, 462. 



— generator of Siemens, Ewell, 368. 



Penfield, S. L., stibiotantalite, 61. 



— obituary notice, Pirsson, 353. 



Pernter, J. M., Meteorologische Op- 

 tik, 81. 



Phelps, M. A., separation of arsenic 

 from copper, 488. 



Photometric, measurements, Tufts, 

 531. 



Physics, Millikanand Gale, 345, 346. 



Pirsson, L. V., obituary notice of S. 

 L. Penfield. 353 ; petrography of 

 Belknap Mountains. 439, 493. 



Plaster-plaques for museums, Good- 

 ale, 90. 



Polarisationsmikroskop, Wein- 

 schenk, 89. 



Polonium, absorption of a-rays from, 

 Levin, 8. 



Pratt, H. S., Vertebrate Geology, 

 190. 



Radio-activity, Becker, Rutherford, 



Levin, 460. 

 Radium, production by actinium, 



Boltwood, 537. 



— and thorium, relative activity, 

 Eve, 477. 



— and uranium in radio-active min- 

 erals, Rutherford and Boltwood ; 

 Eve, 4. 



Raymond, P. E., Chazy formation 



and fauna, 348. 

 Refraktionstafeln, de Ball, 82. 



ROCKS. 



Aplite, Belknap Mts., N. H. 439. 



Camptonite, 498. 



Elastic constants, Adams and 

 Coker, 95. 



Eruptive rocks in Mexico, Guild, 

 159. 



Essexite, Belknap Mts., N. H., 495. 



Gneiss, Gunstock, 505. 



Spessartite, Belknap Mts., N. H., 

 453. 



Syenite, Belknap Mts., 439; of 

 Plauenscher Grund, 129. 



Unakite, Virginia, 248. 

 Rosenbusch, H., Festschrift, 545. 

 Royal Society, London, publica- 

 tions, 192. 

 Russian Carboniferous and Permian, 



Schuchert, 29, 148. 

 Rutherford, E., radium and uranium 



in radio-active minerals, 1. 



Samwel Cave, California, explora- 

 tion, Furlong, 235. 



San Francisco, Earthquake Investi- 

 gation Committee report, 82. 



Schuchert, C, Russian Carbonifer- 

 ous and Permian, 29, 143. 



Sedgwick, W. T., Human Mechan- 

 ism, 549. 



Sellards, E. H., types of Permian 

 insects, 249. 



Shaft governors, Trinks and Housuin, 

 82. 



Shepherd, E. S., lime-si" ""-a series of 

 mineral formation, 265. 



Silicates, constitution of, Tschermak, 

 88. 



Smith, A.,. Inorganic Chemistry, 345. 



Smith, M. F., parallax investigation 

 of 162 stars, 471. 



Soils, Hilgard, 468. 



—Bureau of, 1904 Report, 550. 



South Carolina, Pleistocene deposits, 

 Pugh, 186. 



Stars, investigation of parallax, 

 Chase, Smith and Elkin, 471. 



Swiss Alpine lakes, Bourcart, 468. 



Transvaal, mines of, Moreau, 89. 

 Tschermak, G., silicate formulas, 88. 

 Tufts, F. L., photometric measure- 

 ments, 531. 



