514 



GENERAL INDEX. 



[36 



Pratt, J. H., mineralogical notes 

 from North Carolina. 5, 126, 429 ; 

 rhodolite, 5, 294. 



— origin of corundum in North Caro- 

 lina, 6, 49; twinned crystals of zir- 

 con, 6, 323; associated minerals of 

 rhodolite, 6, 463. 



— chromite, origin, etc., of, 7, 281. 



— separation of alumina from molten 

 magmas, 8, 227; crystallography of 

 the rubies of North Carolina, 8, 

 379. 



— two new occurrences of corundum 

 in North Carolina, 10, 295. 



Precious Stones, production in 1895, 

 Kunz, 3, 352. 



Predazzo, eruptive rocks, Brogger, 

 1, 399. 



Pressures, apparatus for measuring 

 very high, Palmer, 6, 451. 



Preston, E. D., latitude determina- 

 tions, etc., in Hawaiian Is., 1, 75. 



Preston, H. L., San Angelo meteor- 

 ite, 5, 269; iron meteorites, struc- 

 ture and origin, 5, 62; Illinois 

 gulch, Montana, meteorite, 9, 201; 

 two new American meteorites, 9, 

 283 ; new meteorite from Oakley, 

 Kansas, 9, 410. 



Pribiloff Islands, plants of, Macoun, 

 9, 232. 



Prinz, W., Esquisses Selenogiques 

 II., 4, 396; geological experiments, 

 5, 392. 



Prisms, longitudinal aberration of, 

 Abbot and Fowle, 2, 255. 



Pseudomorphs from New York, 

 Smyth, 4, 309. 



Psychrometer, Leavitt, 5, 440. 



Putnam, G. R., pendulum observa- 

 tions, 1, 186. 



Pyrenees, granite of, Lacroix, 6, 

 511. 



Quebec, geology and auriferous de- 

 posits, Chalmers, 8, 394. 



Quincke's rotations in an electrical 

 field, Graetz, 9, 382. 



R 



Rabot, C, variations in length of 



Arctic glaciers, 4, 395. 

 Races of Europe, W. Z. Ripley, 8, 



474. 

 Radiant heat, transmission by gases, 



Brush, 5, 222. 

 Radiation of a dark body, law of, 



Wien and Lummer, 1, 56. 

 — phenomena, irreversible, Planck, 



9, 219. 



Radiation, See Rontgen rays. 

 Radio-active substances (polonium 



and radium), Mine. Curie, 8, 159; 



Debierne, 8, 463, 9, 143; (actinium), 



9, 444; M. and Mine. Curie, 9, 143, 

 144, 145; Becquerel, 9, 147, 443; 

 Giesel, 9, 147, 463; Haen, 8, 386; 

 Rutherford, 9, 220; (barium) Leng- 

 yel, 10, 74; M. and Mme. Curie, 



10, 392; Debierne, 10, 393; (uran- 

 ium), Crookes, 10, 318; barium and 

 polonium, 10, 460. 



— See Becquerel rays and Uranium 

 radiation. 



Radiometer, registering solar, Isham, 



6, 160. 

 Radio-micrometer applied to the 



measurement of short electric 



waves, Pierce, 9, 252. 

 Radium, Curie, 8, 159, 463; Becquerel, 



9, 443; spectrum, 9, 143; Runge, 



10, 396. 



Rafinesque, Icthyologia Ohiensis, 7, 

 473. 



Rammelsberg, C. F., Mineralchemie, 

 1, 151. 



Ramsay, argon, helium, 2, 300, 

 3, 241, 7, 310 ; metargon, neon, 

 krypton, 9, 62. 



Ransome, F. L., lava flows of the. 

 Sierra Nevada, 5, 355; nepheline- 

 syenite in New Jersey, 8, 417 ; 

 carnotite, etc., of Colorado, 10, 

 120. 



Rarified gases, behavior of, Ebert 

 and Wiedemann, 4, 391. 



Rayleigh, limits of audition, 4, 69; 

 nature of the X-rays, 5, 467; possi- 

 bilities of flight, 10, 77; viscosity of 

 gases as affected by temperature, 9, 

 375, 10, 461; weight of hydrogen 

 desiccated by liquid air, 10, 459. 



Rays, see Becquerel, Cathode, 

 Rontgen. 



Reflection, irregular, Hutchins, 6, 

 373. 



Refraction, relation to density, 

 Traube, 3, 479; of air, oxygen, etc., 

 Ramsay and Travers, 5, 227. 



Regnault's calorie, Starkweather, 7, 

 13. 



Resistance of mercury, pressure- 

 coefficient, Palmer, 4, 1. 



— of thin films, Longden, 9, 407. 



— standards, 5, 391. 



— See Electric. 



Reynolds, O., the dryness of satu- 

 rated steam and the condition of 

 steam gas, 2, 450. 



Rhode Island Brachiopod fauna, 

 Walcott, 6, 327. 



