INDEX. 



495 



Osborne, T. B., quantitative determina- 

 tion of niobium, 329. 



Oxides, reduction of metallic by elec- 

 tricity, Cowles, 308. 



Oxygen, new absorbing agent for, 155. 

 simple method of liquefying, 73. 



Ovster, J. EL, Catalogue of Plants, 85. 



Packard, A. S., new Carboniferous limu- 



loids 401. 



embryology of Limulus, 401. 

 Pailleux, A., Le Potager d'un Curieux, 



164. 

 Patterson, H. ST., Check-list of North 



American Gamopetalse, 85. 

 Penfield, S. L., gerhardtite and artificial 



basic cupric nitrates, 50. 



anal cite from Phoenix mine, 112. 

 mineralogical notes, 136. 

 Perkins, C. A., magnetic permeability 



of nickel, 218. 

 Philadelphia, American Philosophical 



Society, 86. 

 Phosphorus, valence of, 483. 

 Plants, see Botany. 

 Platinoid, electrical resistance of, 240. 

 Powell. J. W., Contributions to North 



American Ethnology, 248. 

 U. S. Geological Report, 486. 

 Propane, illuminating power of, 156. 

 Psychrometer, Eazen, 442. 



R 



Eabenhorst's Kryptogamen Flora, 488. 



Rainband spectroscopy, Bell, 347. 



Rethwisch, E., Pyrargyrite and Prous- 

 tite, 402. 



Biggs, B. B., the Grand Rapids mete- 

 orite, 312. 



Russell, I. O, Geological Reconnaissance 

 in Southern Oregon, 79, 487. 



Sablon, L. du, structure and dehiscence of 

 anthers, 488. 



Salt, optical properties of, Langley, 477. 



Saporta, Les Organismes Problematiques 

 des Anciennes Mers, 83. 



Sargent, C. S., "Woods of the United 

 States, 82. 



Scotland, physical features of, 159. 



Screens, transmission of light by, Lang- 

 ley, 210. 



Scribner, G. H., When did Life Begin, 

 88. 



Sea, see Ocean. 



Seely, H. M., new genus of chazy spon- 

 ges, 355. 



Selenium, method of separating, from 

 tellurium, 156. 



Selenium, sensitiveness of, to light, 313. 



Selwyn, A. R. O, Canada Geological 

 Report, 241. 



Shadows, molecular, 314. 



Shepard, O. U., meteorite from Mexico, 

 105. 



Sherman, 0. T, a study of thermome- 

 ters, 42. 



spectrum of Nova Andromeda?, 378. 

 bright lines in stellar spectra, 475. 



Smith, E. A., remarks on a paper of O. 

 Meyer, 270. 



Smith, S. I., notice of Whitman's Meth- 

 ods of Microscopical Research, 403. 



Spectra, bright lines m stellar, Sherman, 

 475. 



Spectroscope, rainband, Bell, 347. 



Spectrum of Nova Andromeda?, Sher- 

 man, 378. 



Star system 40, o 2 Eridani, Hall, 403. 



Stephenson, J. A, D., Emeralds from 

 North Carolina, 82. 



Stewart, B., note on cyclonic storms and 

 magnetic disturbances, 241. 



Stone, G. H., drift scratches in Maine, 

 146. 



Stur, D., Beitrage zur Kenntniss der Flora 

 der Vorwelt, 80. 



Sulphur, sensitiveness of, to light, 313. 



T 



Tait, P. G., Properties of Matter, 241. 



Taylor, W. B., crumpling of the earth's 

 crust, 249, 316. 



Tellurium and selenium, method of sep- 

 arating, 1 56. 



Temperatures, underground, 397. 



Thermometer, differential resistance, 

 Mendenhall, i!4. 



Thermometers, a study of, Sherman, 42. 



Thome, O. W., text-book of Botany, 164. 



Transfer-resistance in voltaic cells, 238. 



Trimen, H., Catalogue of Plants of Cey- 



• Ion, 321. 



Trowbridge J., irregularities in the action 

 of galvanic batteries, 34. 

 a standard of light, 128. 



Tuning-forks, measurement of vibrations 

 of, 485. 



Union Group, Pacific Ocean, Dana, 244. 



