504 



INDEX. 



Minerals — 



Weibveite, 176. 



Zircon, N. 0., 116. 

 Mineraux des roches, M. Levy et La- 



croix, 259. 



N 



Newberry, Paltezoic fishes of N. A., 255. 

 New South Wales, R. Society, 342. 







Obituary — 



Owen, Richard, 96. 



Peters, C. H. F., 176. 

 Ohm, re-determination of, Jones, 419. 

 Ohm's law, experimental proof, Mayer, 



42. 

 Ostwald's Klassiker der exakten Wis- 



senschaften, 499. 



Paris Exposition of 1889, 96. 



Partridge, E. A., atomic weight of cad- 

 mium, 377. 



Penfield, S. L., fayalite in the obsidian 

 of Lipari, 75 ; composition of counel- 

 lite, 82; crystallographic notes, 199; 

 chalcopyrite crystals from Chester 



. Co., Pa., 207 ; anthophyllite, Frank- 

 lin, Macon Co., N. O, 394; beryllium 

 minerals of Mt. Antero, Col., 488. 



Perkins, 0. A., vapor tension ef sul- 

 phuric acid, and Cathetometer micro- 

 scope, 301. 



Phosphoro-photographs, Lommel, 330. 



Photography of oscillating electric 

 sparks, Boys, 331. 



Pirsson, L. V., mordenite, 232 ; fowler- 

 ite variety of rhodonite, New Jersey, 

 484. 



Preston, E. D., magnetic and gravity ob- 

 servations on the west coast of Africa, 

 etc., 478. 



R 



Robertson, J. D., zinc sulphide from 



Cherokee Co., Kansas, 160. 

 Russell, T., prediction of cold-waves, 463. 



s 



Sand-transportation by rivers, Graham, 



746. 

 Schneider, E. A., constitution of natural 



silicates, 303, 405, 452. 

 Sheldon, S., magneto-optical generation 



of electricity, 196. 

 Solar Corona, Bigelow. 343. 

 Spectra, coincidence between lines of 



different, Runge, 165. 



Spectrum of nebula in Orion, Huggins,. 

 173; of Sirius, 175. 



Spencer, J., Sound, Light and Heat, 495 - 

 Magnetism and Electricity, 495. 



Spencer, J. W.. deformation of Iroquois 

 Beach and birth of Lake Ontario, 443. 



Steam calorimeter, Wirtz, 329. 



Stevens, W. L., microscope magnifica- 

 tion, 50. 



Stone, G. H., glacial sediments of Maine, 

 122. 



Stone implement, New Comerstown, 0., 

 95. 



Tarr, R. S., superimposition of the drain- 

 age in central Texas, 359. 



Thermometer, platinum, Griffiths, 494. 



Thurston, Engine and Boiler trials, 262 ,- 

 Heat as a form of Energy, 495. 



Torrey, J., Jr., microscopic structure of 

 Oolite, 246. 



Tyrrell, J. B., Post-tertiary in Manitoba. 

 88 ; Cretaceous of Manitoba, 227. 



Venable, F. P.. new meteoric irons, 161. 

 Very, F. W., cheapest form of light, 97. 

 Volcanoes, eruption of Bandaisan, 169. 

 of Hawaii, Brigham and Lyman, 335. 



w 



Water, weight of cubic inch, Chaney,. 



495. 

 Waves in air produced by projectiles, 



Mach and Wentzel, 419. 

 Wells, H. L., Selenium and Tellurium 



minerals from Honduras, 78. 

 White, D., notice of Feistmantel, 495. 

 Williams, G. H., Crystallography, 424. 

 Williams. J. W., Eudialyte and Eucolite,. 



from Arkansas, 457. 



Teates, phenacite not found at Hebron, 

 Me., 259. 



Zoology — 



Biological Survey of San Francisco 

 Mt., etc., C. H. Merriam and L. 

 Stejneger, 498. 



Mollusks, deep sea, Dall, 94. 



Pelecypoda, etc., phylogeny of, Jack- 

 son, 421. 



Zoe, Biological journal, 93. 



Zoologie, Verzeichniss der Schriften 

 fiber, 342. 



