518 



INDEX. 



Minerals — 



Edingtonite, 189. Elfstorpite, Swe- 

 den, 74. Emeralds, Mitchell Co , 

 N. C. 429. Epidote, Maine, 429. 

 Epistilbite, 190. 



Faujasite, 191. Foresite, 190. Frank - 

 eite, Bolivia, 75. 



Gismondite, 189. Gmelinite, 190. 



Harmolome, 189. Hewlandite, 190. 

 Hydrofranklinite, N.J., 141. Hy- 

 dronephelite, 190. 



Knopite, Alno, 74. 



Lampeostibian, Sweden, 74. Laumon- 

 tite, 190. Leadhillite, Missouri, 

 219. Levynite, 189. 



Natrolite, 191. Nepheline, Ontario, 

 16 Nepheline syenite, Ontario, 10. 



Octahedrite, Arkansas, 114. Offretite, 

 190. Oligoclase, N. Carolina, 115. 

 Orthoclase, Ontario, 16. 



Penfleldite, Greece, 114. Phillipsite, 

 189. 



Rhodoarsenian, Sweden, 74. Rittin- 

 geaite, 75. 



Scoleciie, 190. Shloroarsenian, Swe- 

 den, 74. Sjogruvite, 75. Sodalite, 

 Ontario, 16. Stilbite, 190. 



Thomsonite, 189. 



"Wulfenite crystals, New Mexico, 193. 



Zeolites, Clarke, 187. 



Zircon, Ontario, 214. 

 Moseley, H. P., minute quantities of 



arsenic in copper, 292. 



N 



Niagara Falls, duration, Spencer, 455. 

 Nichols, E. L., physics and applied 



electricity, 346. 

 Nikitin, S., bibliotheque geologique de 



la Russie, 72. 







Obituary — 



Cooke. J. P., 353 



Topley, Wm„ 514. 



Von Helmholtz, H. L. F., 354. 



Williams, G. H., 174. 

 Ostwald, analytical chemistry, 345. 



Peckham. S. F., nitrogen content of 



California bitumen, 250 ; origin of 



bitumens, 3h9. 

 Peirce, B. O., thermo electric properties 



of platinoid and manganine, 302. 

 Pendulum, chronograph. Barus, 396. 

 Penfield. S. L., determination of water, 



30 ; mineralogical notes, 114, 141. 



Phelps, I. K., reduction of arsenic acid, 



216. 

 Physics and applied electricity, Nichols, 



346. 



general, Woollcombe, 429. 

 Pirsson, L. V., leadhillite, Missouri, 219. 

 Planet, story of our, Bonney, 430. 

 Platinoid and Manganine, thermo-elec- 

 tric properties, Peirce. 302, 

 Powell, J. W., geologic atlas of the 



U. S., 170. 

 Pratt, J. H., ferrous iron in silicates, 



149; mineralogical notes, 212. 

 Price, W. A., measurement of electrical 



resistance, 428. 

 Pupin, M. I., resonance analysis of 



alternating currents, 379, 473. 



R 



Ramsay's physical geology and geogra- 

 phy of Great Britain, Woodward, 430. 



Rand, E. L., flora of Mt. Desert, Me , 

 431. 



Redfield, J. H., flora of Mt. Desert, Me., 

 431. 



Ries, H., artificial crystals of zinc oxide, 

 256. 



Riggs, R. B., separation of chromium 

 from iron and aluminium. 409. 



Roberts. C. F., action of reducing agents 

 on iodic acid, 151 ; potassium perman- 

 ganate in iron analysis, 290. 



Russie, Bibliotheque Geologique, de la, 

 Nikitin, 72. 



Scott, W. B., variations and mutations, 

 3.5. 



Seudder. S. H., effect of glaciation on 

 the present fauna of N. A., 179. 



Seaman, A. E., Silurian limestone in 

 No Michigan, 1 73. 



Self induction and capacity of coils, 

 Fromme, 509. 



Silver, colloidal. Barus, 451. 



Simmons, O. L.. development of the 

 lungs of spiders, 119. 



Smith. E. A., fossil resin, 73. 



Smith, J. P., Trias and Jura of Shasta 

 Co., Calif., 350 ; carboniferous strata 

 of Shasta Co., Calif , 350. 



Smyth, C. EL Jr., gabbros in the Adiron- 

 dack region, 54. 



Solar atmosphere, movements, Deslan- 

 dres, 427. 



magnetic period, inversions of tem- 

 peratures, 435. 



system, Harkness, 230. 



Spectroscope slits, Wadswcrth, 19. 



