INDEX. 4^7 



PAGE. 



Shull, George H 127, 128, 136, 142, 148 



Publications by 38 



Shumway, Bertha M 282 



Sill, Herbert Fowler 365 



Silvester, Charles F 183, 185 



Investigations of 187 



Report on Fishes New to the Fauna of Porto Rico 214 



Sinclair, J. G 102 



Smith, H. Monmouth 299, 300 



Pubhcations by 38, 304, 305 



Smith, Ruth E 282 



Smith, Theobald (3), (4), xi 



Smyth, Eugene G , 184, 185, 204 



Social Legislation in the United States, History of 108 



Soil Aeration and Root Growth 63 



Solar Atmosphere, Fields of Force in 256 



Photography 255 



Pressure and Motion in 260 



Research at Mount Wilson 252-262 



Rotation 261 



Soltz, O. S., Publication by 303 



Solution of Limestone in Sea-water 210 



Somerville, A. A 405 



Sommer, H. Oskar 25 



Publication by 38, 51 



Sosman, R. B., Pubhcations by 39, 162, 163, 166, 173 



South America, Magnetic Observations in 325 



Spark Dissymmetries 278 



Species formed in Nature and Artificially 141 



Spectrum of Nova Geminorum No. 2 271 



T Tauri 271 



Spoehr, H. A 90 



Hydratation Capacity of Plant Colloids 66 



Periodic Variations of Respiratory Activity 64 



Studies in Photosynthesis 65 



Spohn, Adelaide A 127 



Spooner, John C (4) 



Stager, Henry W., Publication by 51 



Stark Effect 260, 288 



Stars, Investigations of 263-272 



State Documents, Index of 110 



Stature, Heredity of 141 



Stellar Motions 242 



Photometry 265 



Spectra, Absolute Magnitude Effects in 270 



Spectroscopy 267 



Stelhte, Reflecting Power of 279 



Stewart, Olus J., PubUcation by 39 



St. John, Charles E 251, 252, 253, 260, 261, 277, 278, 279, 282, 287 



Publications by 39 



Stock, Leo F 178, 179, 181 



Stockard, Charles R 131 



Stormer, Carl 24, 252 



Investigations of 274 



Stout, A. B . 25 



Publication by 28 



Streeter, G. L. Ill, 120, 121 



Publications by 39 



Strong, W. W 355 



Summary of Results obtained at Mount Wilson 287-293 



Sumner, Helen L 108 



Sun-spot Polarities 258 



Sun-spots, Magnetic Fields in 257 



Sutton, Alan C 119 



Pubhcation by 39 



Sverdrup, H. U 377 



Publications by 39 



