INDEX. 



48T 



Minerals — 

 Joseite, 229. 



Kainosite, 476. Kobellite from Colo- 

 rado, 73. 

 Lavenite, 230. Lepidomelane, 265. 

 Limonite, pseudomorphs after py- 

 rite, 376. 

 Malachite, 75. 



Ore-deposits, theory of, 474. 

 Pinnoite, 230. Polyarsenite, 230. Po- 

 lybasite, 229. Pseudo-chrysolite, 75. 

 Quartz, compound crystals, 74. 

 Sanidine, 434. Sarkinite, 230. Ser- 

 pentine formations in California, 

 348. Sodalite, 264. Spessartite, 

 434. Strengite. artificial, 311. 

 Tetrahedrite, 229. Topaz in rhyolite, 

 432. Tourmaline locality in Maine, 

 75. 

 Uintahite, 231. Vanadinite, 230. 

 Minerals, artificial, 311. 

 Mitchell Scientific Society, 480. 

 Molecular structure and light-absorption, 



58. 

 Morley, E. W., influence of motion of 



medium on velocity of light, 377. 

 Mountain slides, Tripyramid, 404. 

 Murray, J., bottom deposits from Blake 

 dredgings, 221. 



N 



Nathorst, Nomenclature of fossil Leaves, 



236. 

 Nebula, Nova Andromeda?, Hall, 299; 



in the Pleiades, 318. 

 Newberry, J. S., adaptation in Cicada, 



316. 

 Newcomb, S., velocity of light, 62. 

 Newton, H. A., astronomical notices, 78, 



159. 318. 406: Biela's comet. 81; 



Biela meteors of Nov. 27, 1885, 409. 

 New South Wales, publications of Royal 



Society of, 155. 

 Nichols, E. L„ chemical behavior of iron 



in magnetic field, 272. 

 Nipher. F. E., isodynamic surfaces of 



compound pendulum, 22. 







Obituary — 



Boissier, Kdmond, 20. Campbell, John 

 L., 240. Clinton, George W., 17. 

 Draper, John O, 80. Duby, Jean- 

 Etienne, 312. Fischer, Heinrich, 

 320. Guyot, Arnold, 358. Lasaulx, 

 A. von, 320. Roeper, J. C. 22. 

 Shepard, C. U., 482. Tuckerman, 

 EdwaTd, 316. Tulasne, L. R., and 

 Charles, 312. Wright, Charles, 22. 



Ocean, bottom deposits off American 

 coast, Murray, 221. 



Oppolzer, C. d', Traite de la determina- 

 tion des orbites, 480. 

 Optometer, spectroscopic, 60. 



Pax, P., Species of Acer, 237. 



Pendulum, isodynamic surfaces of com- 

 pound, Nipher, 22. 



Penfield, S. L., brookite crystals, 387. 



Penhallbw, D. P., tendril movements, 

 46. 100, 178. 



Planets, relation of asteroid orbits to 

 those of Jupiter, 318. 



Polar expedition to Point Barrow, Re- 

 port, 319. 



Powell, J. W., Report of Bureau of 

 Ethnology, 320. 



Prestwitch, J., Geology, 311. 



Pntchard, C, Uranometria, 317. 



Purves. E. C, Geology of Antigua, 226. 



R 



Reed, A. Z., Evolution versus Involu- 

 tion, 317. 



Refraction, double, produced by metallic 

 films, 390. 



Refractive indices, variation with tem- 

 perature, 50. 



Richthofeu, F. F. von, Atlas von China, 

 71. 



Rocks, columnar, of N. Jersey, Iddings, 

 321 ; Fulgurite, Mt. Blanc, 75; Hus- 

 sak, on determination of, 156; Perido- 

 tites, near Peekskill, Williams, 26; 

 Quartzite consolidated by enlargement 

 of grains, 225; Rhyolite, topaz and 

 garnet in, Gross, 432 ; Rocks, meta- 

 morphic, of California, Becker, 348. 



Rood, 0. N., notice of Einhorn's Force 

 function in Crystals, 69. 



Roth, J., Geologie, 405. 



Russell, J. C, Glaciers in IT. S., 310. 



Searle, A., zodiacal light, 159. 

 Schulten, A. de, Artificial minerals, 311. 

 Scientific method, inculcation of, Gilbert, 



384. 

 Scott, new Dinocerata, 303. 

 Scudder, N. P., Isaac Lea Bibliography, 



239. 

 Scudder, S. H„ Carboniferous Arachni- 



dan, 310; Ubersicht der fossiler In- 



secten. 403. 

 Slag having composition of fayalite, 405. 

 Shaefer, A. W., Pennsylvania Geology, 



227. ' 

 Shepard, J. H., Inorganic Chemistry, 221. 

 Shufeldt, R. W., Outlines for a Museum 



of Anatomy, 408. 



