258 inde;x. 



Page 



Sligh, W. H 196, 197 



Smith, Carl D 200 



Smith, D. F 200 



Smith, Edgar F., Grant to 24 



Social Legislation, Investigations Concerning 78 



Sociology and Economics, Department of 30, 71 



Soil-moisture in Relation to Plant Growth 63 



Solar Observatory 34 



at Momit Wilson, Annual Report 159-180 



Expenditures for 27 



Solar Rotation, Spectrographic Investigation of 167 



Sommer, H. Oskar. Researches on Arthurian Romances 226 



Southern Hemisphere, Astronomical Observatory in 21 



Sowers, Don C 36, 195, 196 



Publication by 53 



Spalding, Mrs. E. S 61 



Spalding, V. M 29, 62, 70 



Publication by 38 



Spectra of Sun Spots 164 



the Center and Limb of the Sun 167 



Spectroheliograph, Work with 163 



Speyers, C. L 223 



Sprague, R. J 76 



Standardization of Dip Instruments 201 



State Documents, Index of 80 



Steele, H. Wirt 78 



Stellar Photography 171 



Spectroscopy 172 



Stevenson, J. C 86 



Stewart, C. C 197 



Stieglitz, Julius, Publication by 38 



Stockard, Charles R 126, 127, 128, 133, 145, 148 



On Studies of Growth of Certain Marine Forms 133 



Publications by 37, 53 



Stokes, J. F. G 205 



Stone, Alfred H 80 



Stromsten, Frank A 128, 145 



Strong, W. W., Publication by 51, 53 



Sydenstricker, Edgar 79 



Sykes, G 58, 69 



Tafel, R. R 200 



Taft, William H iii 



Taylor, H. C 72, 73 



Tebo Yacht Basin Company 35 



Temperature Standards loi 



Tennent, David H .••.•••. ^^6, 128, 136, 145, 149 



Report on Experiments in Echinoderm Hybridization 136 



Terrestrial Magnetism, Department of 35 



Expenditures for 27 



Report of Department of 194-202 



Terry, E. M 233 



Publication by 53 



Thompson, J. G ^7, 



Tilley, G. S 224 



Publication by 48, 53 



Tolman, C. F 57 



Tower, W. L 29, 58, 66, 68, 85, 126, 14S 



Transeau, E. F 88 



Transportations, Investigations concerning 75 



Treadwell, Aaron L 126, 145, 150 



Trematodes of Tortugas 132 



Trustees, Minutes of Seventh Meeting of 11 



Tschermak, E., Publications by 53 



