INDEX. 



479 



OBITUARY. 



Frazier, B. W., 204. 



Medlicott, H. B., 473. 



Packard, A. S.. 264. 



Struve, Otto, 473. 



Tacchini, P., 473. 

 Observatory, Carnegie Institution on 



Mt. Wilson, Cal.. 472; Harvard, 



400; publications, Yale, 203; Yerkes, 



203. 

 Ohio geol. survey, 465. 

 Optical constants of the eye for dif- 

 ferent colors, Hastings, 205. 

 Optics, Theory, Schuster, 250. 

 Oregon, geology of central, Eussell, 



458. 

 Organic Eeactions, Lassar-Cohn, 



translated by J. B. Tingle, 84. 

 O s t w a 1 d , W . , Conversations on 



Chemistry, 324. 



Pacific, Albatross expedition to the 

 eastern, Agassiz, 143, 274, 367. 



Palaeontologia Universalis, 259. 



Panama Canal, problems of, Abbot, 

 470 ; project for, Bates, 473. 



Parsons, C. L., Elements of Miner- 

 alogy, Crystallography, etc., 261. 



Payne, J. F., English Medicine in the 

 Anglo-Saxon Times, 263. 



Pearce, F., Eecherches geologiques 

 et petrographiques sur l'Oural du 

 Nord, 467. 



Penck, A., climatic features in the 

 land surface, 165. 



Penfield, S. L., crystal drawing, 39. 



Pennsylvania, limestones of south- 

 western, Clapp. 457. 



Percentage Tables, Guttmann, 456. 



Phosphorescence, Lenard and Klatt, 

 85. _ 



Physical Science, Recent Develop- 

 ment, Whetham, 195. 



Physiography and Suess's theories, 

 Davis, 265. 



Physiology, Studies in, Loeb, 264, 

 332. 



Pinchot, G., Primer of Forestry, Part 

 II, 471. 



Pirsson, L. V., igneous rocks of 

 Highwood Mts. , Montana, 330 ; 

 petrographical notices, 200, 467. 



Platinum resources in the United 

 States, 398 ; in Brazil, 397. 



Predazzo, Monzoni, rocks of, Rom- 

 berg, 201. 



Pteraspis dunensis, Drevermann, 



464. 

 Pyrometry, optical, Waidner and 



Burgess, 329. 



Radiation, polarized Rontgen, Bark- 

 la, 391. 



— solar, variation in, Langley, 246. 



— pressure, Bartoli, 86 ; Poynting, 

 453. 



Radio-active earths, occurrence of, 

 Giesel, 245. 



— measurements, Bronson, 185. 

 Radio-activity and chemical change, 



Campbell, 454. 



— of underground air, Dadourian, 16. 

 Radio-tellurium, Marckwald, 324. 

 Radium, occurrence of, Giesel, 245. 



— origin, Boltwoocl, 452. 



— in springs, Colorado, Headden, 297. 

 Raymond, P. E., Amphion, Harpina 



and Platymetopus, 377. 

 Refractions, double, Braun, 325. 



ROCKS. 



Celestite-bearing rocks, Kraus, 286, 

 Heptorite, from the Siebengebirge. 



201. 

 Igneous rocks of Highwood Mts., 



Montana, Pirsson, 330 ; Predazzo 



and Monzoni, Romberg, 201. 

 Koswite, 467. 

 Peridotite at Ithaca, N. Y., Barnett, 



210. 

 Rocks of the Andes, Tannhauser, 



von Wolff, 201. 

 Schists, crystalline, Grubenmann, 



202. 

 Tilaite, 467. 

 Rollins, W., Notes on X-light, 86. 

 Rontgen radiation, polarized, Barkla, 



391. 



— see also X-rays. 

 Ruedemann, R., some primitive 



cephalopods, 463. 

 Russell, I. C, geology of central 

 Oregon, 458. 



Schaller, W. T., dumortierite, 211 ; 

 crystallography of lepidolite, 225. 



Schenck, R., Kristallinische Flussig- 

 keiten, 454. 



Schuchert, C, notice of Williams' 

 and Kindle's Devonian Paleontol- 

 ogy, 460 ; paleontological notices, 

 197, 258, 460. 



Schuster, A., Theory of Optics, 250. 



