INDEX. 



485 



Minerals — 



Cassiterite in California, 39. Chal- 



costibite, Bolivia, 31. Corundum, 



Montana, 417, 421, 424. 

 Danaite, British Columbia, 78. 



Diamond, So. Africa, 77. Dicks- 



bergite, Sweden, 158. 

 Fluorite, 474. 

 Fuggerite, 159. 

 Guejarite, 27. 

 Hamlinite, Maine, 313. 

 Ilmenite, composition, 108. Iron, 



native, Missouri, 99. 

 Leonite, 158. Leucite, Wyoming, 



115. 

 Maltesite, Finland, 158. Mangan- 



andalusite, Sweden, 158. Mica 



pseudomorphs, 309. Monazite, 



Idaho, 63. Munkforssite, Swe- 

 den, 159. 

 Nitre, 118. 



Pyroxene pseudomorph, 309. 

 Quirogite, 158. 

 Sapphires, Montana, 417, 421, 424. 



Scheelite, Nova Scotia, 78. 



Stromeyerite, British Columbia, 



78. 

 Tetradymite, British Columbia, 78. 



Topaz. Utah, 107. 

 Wolfsbergite, 27. 

 Minerals, determination of hardness 



of, Jaggar, 399. 

 Mixter, W. G., electrosynthesis, 51. 

 Morgan, T. H., Development of the 



Frog's Egg, 161. 

 Morphology, Experimental, Daven- 

 port, 397. 

 Mudge, pre-glacial drainage in Michi- 

 gan, 383. 



N 



Nichols, E. L., Light and Sound, 73. 

 Nicol prism, new, Leiss, 475. 

 Nile delta, deposits of, Judd, 74. 



Obituary — 



Clark, A. G., 83. 



Des Cloizeaux, A., 164. 



Fresenius, C. E., 84. 



Mayer, A. M., 161. 



Meyer, V., 398. 



Sachs, J., 164. 

 Orthoptera, North America, Scudder, 



250. 

 Ortmann, A. E., Crangopsis vermi- 



formis of Kentucky, 283 ; Linupa- 



rus atavus of Dakota, 290 ; large 



oysters of Patagonia, 355. 



Oscillatory currents, Seiler, 71. 



discharge of a large accumulator, 



Trowbridge, 194. 

 Ostwald, supersaturation, etc., 151. 

 Ostwald's Klassiker der Exacten Wis- 



senschaften, 398. 

 Oysters of Patagonia, Ortmann, 355. 



Palmer A. deF., Jr., pressure coeffi- 

 cient of mercury resistance, 1. 



Patagonia, geology of, 247, 327, 355. 



Penfield, S. L., identity of chalco- 

 stibite, etc., from Bolivia, 27; 

 bixbyite and topaz, 105 ; composi- 

 tion of ilmenite, 108 ; chemical com- 

 position of hamlinite, 313. 



Perry, J., Calculus for Engineers, 

 398. 



Phase Eule, Bancroft, 67. 



Phelps I. K., combustion of organic 

 substances in the wet way, 372. 



Photoelectric relations of fluorspar 

 and selenium, Schmidt, 474. 



Physics, Cooley, 390 ; Elements, 

 Nichols and Franklin, 73. 



Physiology, American Journal of, 481. 



Pirsson, L. V. , corundum-bearing rock 

 from Montana, 421. 



Polarization capacity, Gordon, 71. 



Pratt, J. H., crystallography of Mon- 

 tana sapphires, 424. 



Prinz, W., Esquisses Selenogiques II., 

 396. 



Pseudomorphs from New York, 

 Smyth, 309. 



Eabot, C, variations in length of 

 Arctic glaciers, 395. 



Earified gases, behavior of, Ebert and 

 Wiedeman, 391. 



Eayleigh, limits of audition, 69. 



Eesistance of mercury, pressure-coef- 

 ficient, Palmer, 1. 



Eobb, W. L. , solarization effects on 

 Eontgen ray photographs, 243. 



Eontgen rays, in surgery, 72. 



photographs, solarization effects, 

 Eobb, 243. 

 See Cathode rays. 



Eowland, H. A., electrical measure- 

 ment by alternating currents, 429. 



Eocks — 



Fractional crystallization of rocks, 

 Becker, 257. 



