INDEX. 



511 



Bpidote, Bodewig, 164; parage nesis 

 of in rocks, Hobbs, 223; Eudia- 

 lyte,(?) Arkansas, 494. 



Eergusonite, Texas, Hidden and Mackin- 

 tosh, 482 ; Ferronatrite, Chili, anal., 

 Mackintosh, 244 ; Flinkite, Sweden, 

 anal., Hamberg, 250 ; Pluorite, 

 N. T., 72. 



Gadolinite, Texas, aual., Genth, 198, 

 Eakins, 479, occurrence, Hidden 

 and Mackintosh, 474; G-yrolite, new- 

 occurrence of, Clarke, 128. 



Hanksite, aual., Bodewig, 165; Haugh- 

 tonite, Clarke, 390 ; Hydroplumbite, 

 Leadville, Heddle, 250. 



Iron sulphates from Chili, Mackintosh, 

 242; 



Lepidolite, Clarke, 387 ; Lepidome- 

 lane, Clarke, 390 ; Leucite, Wyom 

 ing, 43. 



Margarite, Clarke, 391; Mazapilite, 

 Mexico, anal., Koenig, 252; Mica 

 group, theory of, Clarke, 384; Mich- 

 ellevyte, Quebec, Lacroix, 219; Mon- 

 azite, Canada, anal., Genth, 203 ; 

 Muscovite. Clarke, 387. 



Nivenite, new, Hidden and Mackin- 

 tosh, 481. 



Opal, Oregon, 73. 



Phlogopite, Clarke, 389 ; Plattnerite, 

 Idaho, anal., Wheeler, 79 ; Haw- 

 kins, 1 65 ; Pleonectite. Sweden, 25 1 ; 

 Plumbonacrite, Sweden, anal, Hed- 

 dle. 250; Pyroxene, hemihedrism 

 of, Williams, 115. 



Quartz as an insulator, Boys, 76. 



Roemerite, Chili, anal., Mackintosh, 

 243 



Siderophyllite, Clarke, 390 ; Silicates, 

 formulas, Becker, 154. 



Tephrowillemite, N. J., Koenig, 329; 

 Thoro-gummite, new, Plidden and 

 Mackintosh, 480 ; Trona, see TJrao. 



Uraniaite, composition of, Hillebrand, 

 329, 495; Urao, anal., 59; (Trona), 

 crystallization of, 65. 



Yttrialite, new, Hidden and Mackin- 

 tosh, 47 7. 

 Minerals, catalogue of, Egleston, 494. 

 Llano Co., Texas, Hidden and Mack- 

 intosh, 474. 



of New South Wales, Liversidge, 



166. 

 Moon, temperature of, Langley, 421 

 Morley, E. W., feasibility of establishing 



a light-wave as ultimate standard of 



length, 181. 

 Morley and Muir, Watts' Dictionary of 



Chemistry, 409. 

 Muir, Treatise on Principles of Chem- 

 istry, 410. 



Museum of natural history, American, 

 Bulletin, 78. 



National, U. S., Bulletin, 498. 



N 



Nason, F. L., Camptonite from Vermont, 

 229. 



Newberry, J. S., Fossil Fishes and Fos- 

 sil Plants of the Triassic Rocks of 

 N. J. and Conn. Valley, 77. 



Newton, H. A., Astronomical notice, 170. 



Nichols, E. L., spectro-photometric com- 

 parison of sources of artificial illum- 

 ination, 100. 



Nipher, F. E., non-condensing steam 

 engine, 281. 



Obituary— Cook, George H., 336, 498; 

 Joule, J. P., 600; Lesquereux, Leo, 

 499; L'iomis, Elias, 256; Meneghini, 

 Giuseppe, 336; Mitchell, Maria, 172; 

 Percy, John, 172. 



Oswald's Klassiker der exakten Wissen- 

 schaften, Nos. 1-3, 256. 



Peirce, B. 0., measurement of internal 

 resistance of batteries, 465. 



Penrose, R. A. F., Jr., Tertiary and 

 Cretaceous of Arkansas and Texas, 

 468. 



Pfeffer, Beitrage zur Kenntniss der Oxi- 

 dcitionsvorgange in lebenden Zellen, 

 166. 



Photographic lens, Zenger, 491. 



Photography, Chemistry of, Meldola, 

 255. 



Pin-hole, Rayleigh, 491. 



Planetary bodies, law of densities, 393. 



Polarization, circular, of tartrate solu- 

 tions, Long, 264. 



R 



Radiation, electric, concentration by 

 lenses, Lodge and Howard, 75; solar, 

 influence on electrical phenomena in 

 atmosphere of earth. Arrhenius, 161; 

 thermal, law of, Ferrel, 3. 



Rays, ultra-violet, disintegration of sur- 

 faces by means of, Lenard aud Wolf, 

 247. 



Reflection, selective of metals, Rubens, 

 162. 



Resistance, B. A., unit of, Duncan, 

 Wilkes and Hutchinson, 230; inter- 

 nal, of batteries, measurement of, 

 Pierce and Willson, 465. 



