514 



GENERAL INDEX. 



[36 



from Pennsylvania,. 43, 319; 

 Parasuchian from the Triassic 

 of Perm., 45, 457- 



Sinnott, E. W., coniferous woods 

 of the Potomac formation, 41, 

 276. 



Skeats, E. W., coral-reef problem 

 and Funafuti borings, 45, 81; 

 and dolomite formation, 45, 185. 



Smith, A. J., Chemistry of Metabol- 

 ism, translation, 42, 442. 



Smith, C. M., lead-chlor arsenate, 

 42, 139; Electric and Magnetic 

 Measurements, 43, 415. 



Smith, E. A., Zinc Industry, 46, 689. 



Smith, E. F., Life of Robert Hare, 

 44, 76; Life of James Wood- 

 house, 46^ 541; Electro- Analysis, 

 46, 766; Chemistry in Old Phila- 

 delphia, 47, 383; James Cutbush, 

 Amer. Chemist, 1 788-1823, 49, 79- 



Smith, G., dyscrasite, Australia, 49, 

 278. 



Smith, G. McP., Quantitative 

 Chemical Analysis, 48, 468. 



Smith, G. O., century of govern- 

 ment geological surveys, 46, 171. 



Smith, W. D., radiolarian cherts in 

 Oregon, 42, 299, 504. 



Smithsonian Institution, annual re- 

 port, 1915, 4i, 303; 1916, 43, 87; 

 1917, 45, 149; 1918, 47, 146; 1919, 



49, 154- 

 Explorations and Field 



Work in 19 16, 43, 497; 19*9, 50, 



80. 

 Meteorological Tables, 49, 



216. 



— Physical Tables, Fowle, 50, 466. 

 Smyth, C. P., moisture content of 



typical coals, 45, 174. 

 Soderman, M. A., barium and 



strontium, separation, 46, 538. 

 Sodium, line spectrum, Strutt, 49, 



302. 



— vapor, fluorescence, Strutt, 41, 

 144; ionizing potential, Wood 

 and Okano, 44, 401; resonance, 

 radiation, Mohler and Wood, 47, 

 442. 



— See CHEMISTRY. 



Soil Conditions and Plant Growth, 

 Russell, 45, 423- 



— Physics and Management, 

 Mosier and Gustafson, 45, 484. 



Soils, manganese in, Johnson, 43, 

 410. 



— and Manures, Russell, 42, 283. 

 Solar radiation, 44, 482. 



Solubilities of Inorganic and Or- 

 ganic Compounds, Seidell, 49, 78. 



Solution, Nature of, Jones, 44, 78. 



Sosman, R. B., work of the Geo- 

 physical Laboratory, Washing- 

 ton, 46, 255. 



Sounds of drops falling on water, 

 Mallock, 47, 136. 



South Africa geol. survey, 41, 564. 



South America, Cretaceous-Ter- 

 tiary boundary, Windhausen, 

 45, I- 



See Peru. 



South Australia, Geology, How- 

 chin, 47, 389; Jack, 45, 147; Tal- 

 bot and Clarke. 47, 389. 



— geol. survey. See GEOLOG- 

 ICAL REPORTS. 



Southall, J. P. C, Mirrors, Prisms, 

 and Lenses, 47, 228. 



Specific heats, silicate determina- 

 tion, White, 47, 1. 



Spectograph, positive ray, Aston, 



49, 444- 

 Spectra, hydrogen, Stark, 41, 465. 



— interference of reversed, Barus, 



41, 414. 



— iron, King, 46, 767. 



— of isotopes, Merton, 49, 213. 



— of lead and thallium, Merton, 

 49, 213. 



— Origin, Thompson, 48, 70. 



— rotation of interference fringes, 

 Barus, 42, 63. 



— ultra-violet of helium, hydrogen, 

 etc., Richardson and Bazzoni, 45, 

 73- 



— X-ray, iodine and tellurium, 

 Siegbahn, 41, 465. 



Spectral series and atomic number, 



Bell, 47, 227. 

 Spectrograms, interpolations on, 



Merwin, 43, 49. 

 Spectroheliograph, Rumford, of 



Yerkes Observatory, Hale and 



Ellerman, 45, 472. 

 Spectrum of helium, 49, 81. 



— interferometry, Barus, 41, 414; 



42, 63, 402; 43, 145. 



— of iron, Hemsalech, 43, 413. 



— lines, distribution of intensity, 

 Nicholson and Merton, 14, 466; 

 structure of broadened, Merton, 



42, 77- . 



— of radium, 49, 79. 



— solar, Einstein-displacement, 50, 

 394; occurrence of ultra-violet 

 bands in, Fowler and Gregory, 

 46, 617. 



— See Spectra. 



