INDEX. 241 



Page 



Soil-moisture 64 



Solar Observatory 29 



Grants for 21 



at ]\Iount Wilson, Report of Director of 134-153 



Solar Rotation, Spectrographic Investigation of 142 



Sommer, H. Oskar 31 



Publications by S3 



Researches on Arthurian Romances 199 



South Pacific Islands, Magnetic Survey in 161 



Sowers, D. C 154, 161 



Spalding, E. S 61 



Spalding, V. M 24, 57, 60 



Spanish Archives, Materials for the History of the United States in 98 



Special Observational Work, Department of Terrestrial Magnetism 164 



Spectroheliograph, Work with 138 



Staehler, Arthur, Publications by 52, 53 



Starks, Edwin C 229 



State Works of Pennsylvania 70 



Stieglitz, Julius 195 



Stockard, Charles R., Report of Investigations 118 



Stock, H. H 70 



Stone, Alfred H ^z 



Stull, W. N., Publications by 52, 53 



Stupart, R. F 160 



Sun's Disk, Photographic Comparisons of the Spectra of Various Parts of 141 



Sun-spots, Spectra of 140 



Sykes, G 57, 64, 67 



Syme, W. A., Publications by 46, 53 



Syrian Immigration 69 



Taft, William H 11 



Tariflf Provisions for Promotion of Foreign Trade 71 



Taylor, A. H 213 



Temperature Scale 90 



Terrestrial Magnetism, Department of 30 



Grants for 21 



Report of Department of 154-166 



Terry, E. M 213 



Thomas, D. Y 71 



Thornber, J. J 68 



Tilley, George S 183 



Tittmann, O. H 156 



Tolman, Cyrus 68 



Tower Telescope at Mount Wilson Solar Observatory 149 



Tower, W. L., An Investigation of Evolution in Chrysomelid Beetles of the Genus 



Leptinotarsa , 32 



Grant for Publication .' 18 



Tower, Walter S 71 



Publication by 53 



Transeau, E. N 78 



Study of Selective and Environmental Factors 82 



Transportation, Investigations Concerning 70 



in the Southern Cotton Belt to 1861 70 



Trelease, William 67 



Tropical Exploration, Grant for 21 



Uhler, H. S., Atlas of Absorption Spectra 33 



Publications by SO, 53 



Underbill, Frank P 201 



Ussing, N. V 196 



Vail, A. M., Mutations, Variations, and Relationships of the Oenotheras 2>2> 



Valle, Felipe 161 



Van Deman, Esther B .' 169 



Variometer, Magnetic Observations with a Recording 145 



Varnum, William B 124 



Walcott, Charles D ii 



