510 



INDEX. 



R 



Radiation in absolute measure, 77. 



Reade, T. M., mountaiu making, 415. 



Reflection and refraction, apparatus to illus- 

 trate, 332. 



Refraction, double, in Iceland spar, Hastings, 

 GO ; on electrical theory, Gibbs, 467. 



Kcid, H. P., theory of the bolometer, 160. 



Renevicr, on fossils in the Alps, 80. 



Richter, V. von. Inorganic Chemistry. 251. 



Riggs, R. B., composition of tourmaline, 35. 



Robinson, F. 0., supposed meteorite of North- 

 ford, Me., 212 



Rolleston, Forms of Animal Life, 504. 



Roth. J., Allgemeine uud chemische Geologie, 

 257. 



Rocks — Diorite dike, N. Y., Kemp, 331. 

 Diorites, " Oortlandt Series." N. Y„ Wil- 

 liams, 438. Gabbros, " Cortlandt Series," 

 N. Y., Williams, 438. Peridotite, augites in, 

 Merrill, 488. Quartzites, spotted, from 

 Minn., Bayley, 388. 



Rucker, velocity of sound. 252. 



Salisbury, R. D., terminal moraines in Ger- 

 many, 401. 



Schmidt, A., Geologie des Miinsterthals, 346. 



Seism 'logical investigations. 97. 



Shea, P. W., calibration of an electrometer. 

 204. 



Smith, S 1., obituary notice of O. Harger, 

 425. 



Solids, flow of 78. 



Sound, velocity of, 252. 495. 



Spectra, absorption. 412; coincidences be- 

 tween lines of different. 252: influence of 

 light-producing layers upon. 253. 



Spectrum analysis, use of interference fringes, 

 495 ; solar, light intensity in, 77. 



Spring, W., criticism of Hallock on flow of 

 solids, 78. 



Stalagmometer and quantitative analysis, 248. 



Steen, A. S., Beobachtungs-Ergebnisse der 

 norwegischen Polarstation Bossekop in 

 Alten, 345. 



Stevens, W. L., apparatus for demonstration 

 of reflection and refraction, 332. 



Stewart, B., Elementary Practical Physics, 

 vol. ii, 79 ; Practical Physics, 336. 



Sun, rotation of, Crew, 151, 



Temperature, influence of, on magnetization. 



253. 

 Trowbridge, J., physical notices, 77, 251, 



337. 412, 495. 



u 



Upham, W., upper beaches and deltas of 

 Lake Agassiz, 86. 



V 



Viscosity, pyrometric use of, Barns, 407. 

 Volcano — Kilauea, Dana, 15, 213, 282; 

 Emerson, 257. 



w 



Walcott, C. D., Taconic of Emmous, 229, 307, 



394. 

 Waldo, C A., Descriptive Geometry. 345. 

 Ward, L F., notice of W. C. Williamson on 



fossil plants, 256. 

 Washington, H. S.. minerals from Utah, 2 98. 

 Water, spectrum of, 337. 

 Weber, instrument for measuring heat, 251. 

 White, C. A., contributions to Paleontology 



of Brazil, 255 ; relation of Laramie group 



to earlier and later formations, 432. 

 Williams, G. rl., gabbros and diorites of 



" Cortlaudt Series,'' near Peekskill, N. Y., 



438; petrosraphical microscope, 114. 

 Williams. H. S., Devonian system in N. 



America, 51. 

 Williamson, W. C, Fossil Plauts of Coal 



Measures; Pt. xiii, 256. 



z 



Zoological Bibliotheca, Chun and Leuckart, 



420; Taschenberg, 505. 

 Zoology— 



Annelids, Elders, 424. 



Forms of Animal Life, Rolleston, 504. 



Japanische Seeigel, Doderleiu, 505. 



Medusas, deep-sea Fewkes, 1 66. 



West C >ast Shells, Keep, 264. 



See further uuder Geology. 



