474 



INDEX. 



PAGE. 



Solar Eclipse, Magnetic Observations during 332 

 Solar Lines and Relativity, Displacement of 242 



Solar Photography 235 



Solar Researches at Mount Wilson 235 



Solar Rotation 241 



Solberg, H., Publication by 19 



Somatic Selection, Alteration of Average of 



Population by 134 



Sosman, Robert B vii 



Publications by 26, 166, 168 



Space Groups, Theory applied to Study of 



Structure of Crystals 168 



Space-Velocity and Absolute Magnitude. . . . 272 

 Spaulding, M. H 88, 89 



Publication by 17 



Spectroscopic Determinations of Luminosity 



and Parallax 269 



Spoehr, H. A vii, 53 



on Carbohydrate-Amino-Acid Relation 



in Respiration of Leaves 60 



on Internal Factor in Photosynthesis. . 61 



on New Chemical Laboratory at Carmel 63 



on Reduction of Pentose Sugars 62 



Spooner, John C vi, xi 



Standardization and Instrument work in 



Magnetism 315 



Stanton, Hazel M 141, 142 



Star Clusters and Galactic System 265 



Stellar Interferometer 277 



Stellar Photometry 259 



on Infra-Red, Preliminary Experiments 



on 266 



Stellar Spectra, Classification of 275 



Stellar Spectroscopy 267 



Stellar Wave-lengths 211 



Steiner, W. F 339, 340 



Sterility, Causes of 110 



Stewart, George 153 



Stewart, J. Q 346 



St. John, Charles E., viii, 223, 224, 225, 233, 234, 

 238, 240, 241, 242, 243, 244, 246, 247, 248, 289 



Publications by 26 



Stock, Leo F vii, 186, 190, 233 



Streeter, George L vii, 26 



Publications by 17 



Report as Director of Department of 



Embryology 77-99 



Stromberg, Gustaf viii, 233, 2G7, 269, 272 



Publications by 18, 26 



Strong, L. C 123 



Publication by 26 



Sturtevant, A. H xiii 



on Constitution of Germ-Plasm in Re- 

 lation to Heredity 375-380 



Publication by 17 



Subarachnoid Spaces 85 



Sun and Earth, Electric and Magnetic Activ- 

 ity of 332 



Sun-spot Activity 235 



Sun-spot Hypotheses 237 



Sun-spot of May 1921 236 



Sun-spot Polarities 235 



Sun-spot Spectrum 237 



Sun-spot Vortex, Expansion in 238 



Sunier, A. L. J 196 



Surrey, N. M. Miller 180, 182 



Sverdrup, H. U 326 



PAGE. 



Sykes, Godfrey vii 



Syphilis in Fetus 95 



Systematic Motions of Stars based on Space- 

 Velocities 272 



Taft, William H vi, 31 



Takahira, D 297 



Talbot, Fritz B., on Metabolism and Growth 



from Birth to Puberty 302 



Publication by 17 



Tatlock, John S. P ix 



Taxonomy, Experimental 397 



Taxonomy, Phylogenetic Method in 398 



Taylor, F. W 156 



Teratoid Flowers, Inheritance in Diplacus 



glutinosus 74 



Terrestrial Electricity 316 



Terrestrial Magnetism and Electricity, rela- 

 tion between 334 



Terrestrial Magnetism, Report of Depart- 

 ment of 307-357 



Thomson, A viii, 322 



Thomson, Charles 185 



Thomson, J. J 345, 346 



Throop, Amos G 219 



Thunberg, T 297 



Tibbetts, Emma L 333, 336, 337 



Tissue-Cultures, Characteristics of Cell 



Types 77 



Torbernite, Abnormal Birefringence of 163 



Townsend, Charles H 205 



Training Class of Eugenics Record Office. . . 155 



Transpiring Power, Significance of 394 



Transplant Quadrats and Areas 403 



Transplantation of Adrenals and Gonads 



into Doves 146 



Treadwell, A. L vii, 194, 196 



Report on Polychsete Annelids of Mon- 



tego Bay 197 



Trigonometric Parallaxes and Proper Mo- 

 tions 258 



Trustees of Institution v, vi 



Trustees, Minutes of Twenty-second Meet- 

 ing of XXI 



Twentieth Anniversary of Institution 2 



Ultra-Violet Spectrum of Iron 288 



Unification of Symbols and Diagrams 167 



Urine, Composition as affected by Ingestion 



of Alcohol 298 



Urogenital System 88 



Valentine, Andrus T 21, 122, 152, 153 



Publication by 26 



Van Deman, Esther B viii 



Report on Archseological Investigations 369 



Van Hise, C. R 421 



Van Laer. A. J. F 182 



VanMaanen,A., vii, 226, 229, 233, 234, 255, 258, 

 259. 



Publications by 26 



van Rhijn, P. J 227, 261, 276 



Variable Stars 265 



Varnum, William B vii, 210, 213 



Publication by 26 



Vascular Anatomy of Normal and Terato- 



logical Seedlings of Phaseohis vulgaris 133 



Vaughan, Charles R 189 



Vaughan, T. W 195 



Publication by 26 



