718 



GENERAL INDEX. 



[42 



Plants, Pleistocene, Berry, 34, 



218. 

 Plates, parallel, repulsion of, 



Barus, 37, 350. 

 Platinum, production in 1910, 33, 



67; in 19 1 3, 38, 568. 



— X-ray spectrum, Seemann, 38, 

 561. 



Plimpton, S. J., recombination or 

 ions, 35, 39- 



Pogue, J. E., quartz from No. 

 Carolina, 34, 414; cerussite twin 

 from Arizona, 35, 90; Turquoise, 

 40, 220. 



Poisons, Detection, Autenrieth, 

 39, 612. 



Polonium (Delta rays), Bum- 

 stead, 36, 91. 



— ionization by a-particles from, 

 Taylor, 31, 249. 



— researches, Curie and De- 

 bierne, 31, 453- 



Positive electricity, Thompson, 



3i, 455- 



— rays, Wien, 31, 77- 



Postma, G. E., analysis of dahl- 

 lite, vcelckerite, etc., 33, 475. 



Potash in the United States, 33, 

 69. 



Powell, S. L., age of Virginia 

 Piedmont slates, 31, 33. 



Power, Lucke, 32, 84. 



Poynting, J. H., Pressure of 

 Light, 32, 68. 



Poyser, A. W., Magnetism and 

 Electricity, 34, 482. 



Precious Stones, Kunz, 37, 122. 



See Gems. 



Prescott, J., Mechanics, 37, 112. 



Pressure in detonation of high ex- 

 plosives measured, Hopkinson, 



37, 277- 



— of Light, Poynting, 32, 68. 



Pressures, effect of high, on melt- 

 ing point of metals, Johnston 

 and Adams, 31, 501; on prop- 

 erties of solids, 35, 205. 



Price, T. S., Per-acids and their 

 Salts, 34, 573- 



Price, W. B., Analysis of Brass, 

 etc., 32, 468. 



Princeton Observatory, see Ob- 

 servatory. 



Pring, J. W., Physical Chemistry, 



34, 91. 

 Prisms, deviation produced by, 



Uhler, 35* 389. 

 Prospects, Examination of, Gun- 



ther, 35, 112. 



Protein Element in Nutrition, 



McCay, 35, 118. 

 — Metabolism, Physiology, Cath- 



cart, 35, 116. 

 Proteins, Chemical Constitution, 



Plimmer, 35, 117. 

 Protozoa, Minchin, 35, 114. 

 Psychology, Founders of, Hall, 



35, 203. 

 Punnett, R. C, Mendelism, 32, 325. 

 Pyroxene, see MINERALS. 



Quadratures, new mechanical, 



Becker, 32, 117. 

 Quartz glass, thermal expansion, 



Scheel and Heuse, 37, 479. 



— spectrograph, Hutchins, 36, 

 328. 



— relation to tridymite, and 

 cristobalite, 36, 331; 39, 1, 407. 



— See MINERALS. 

 Queensland Museum, memoirs, 



38, 107. 



Radiation, atmospheric, Very, 34, 

 533; 35, 369; Bigelow, 35, 254. 



— solar, Very, 36, 609; 39, 201; 

 Bigelow, 38, 277. 



Radio-active content of Minne- 

 sota soils, Sanderson, 39, 391. 



— disintegration, effect of tem- 

 perature, Russell, 33, 587. 



— origin of color of zircons, 

 Strutt, 37, 275. 



— substances, enrichment, Ebler 

 and Fellner, 32, 467. 



heat generated by, Duane, 



3i, 257. 

 Radio-activity of Diirkheim 



Waters, Ebler and Fellner, 33, 



— influence of soil on local at- 

 mospheric, Sanderson, 32, 169. 



— and Matter, Jones, 40, 518. 



— measurements, Barss, 33, 546: 

 Makower, and Geiger, 35, 328. 



— of spring water, Ramsay, 40, 

 309. 



— Studies in, Bragg, 35, 193. 



— See Radium. 

 Radio-elements and the Periodic 



Law, Soddv, 35- 538, 37, 349; 

 reactions of, 37, no. 



