INDEX. 



423 



Sex in Mucors 



Sex Intergrades in Daphnia 



Sex-Linked Lethal Factors in Man. 

 Sex-Linked Lethal Factors in Mice. 

 Sex-Ratio in Man, Modification of. 

 Sex, Significance and Control of . . . 



PAGE. 



219 

 127 

 149 

 125 



124 

 122 



Shapley, Harlow, 211, 212, 216, 220, 221, 233, 23S. 

 242, 243, 2-44, 251 



Publications by 31, 32 



Sheep, Heredity in 137 



Sheep, Respiration Experiments on 273 



Shepherd, E. S., Publications by 32, 174 



Sherburne, Gardner 251 



Sherman, H. C v 



Chemical Investigations by 338 



Publications bv 32 



Shipley, P. G " 89 



Publication by 32 



Shreve, Edith B., on Seasonal Chan^^es in 



Transpiration of Encelia farinosa. . . 73 



Shreve, Forrest, on Ecology of Santa Lucia 



Mountains 78 



on Soil-Temperature Survey 72 



on Vegetation of a Desert Valley 77 



Publication by 32 



Shrinkage of Earth 367 



Shumway, Bertha M 221 



Singer, Charles 384 



Sinnott, E. W 139 



Sino-ventricular Bundle, Publication by 



Robert Rctzer ". 21 



Skin Color, Heredity of 151 



Skin Temperature 272 



Slocum, Frederick v, 285, 299, 300, 301 



Slow Chemical Reactions 337 



Smith, Albert 281, 296 



Smith, D. T 90, 106 



Publication by 32 



Smith, H. Monmouth 267, 269 



Smith, M. B 301, 303 



Smith, Sinclair 221 



Smith, Theobald iii, iv, xix, xx 



Smith, Walter 295 



Smyth, Charles P 336 



Sodium Amalgams 337 



Soil-Temperature Survey 72 



Solar Eclipse of May 29, 1919 285, 298 



Solar Photography 222 



Solar Research 221 



Solar Rotation 226 



Solar Spectrum, Infra-Red 229 



Solar Wave-Lengths 228 



Solberg, H 388 



Somatic Selection, Alteration of Quality of a 



Population by 1 39 



South America, Terrestrial Magnetism Work . 293 



Souza, G. H. de Paula 269 



Spark Spectra 262, 263 



Spaulding, H. M 102, 106 



Publication by 32 



Spectra of Certain Novte 247 



Spectra of Exploding Wires 262 



Spectroscopic Determinations of Luminosity 



and Parallax 246 



Speidel, Carl Caskey, Publication by 22 



Spermatophores of Octopus americana. Struc- 

 ture and Ejaculation of. Publication 



by Gilman A. Drew 22 



Spinal Cord of Skates, etc., Publication by 



Carl C. Speidel ". 22 



Spoehr, H. A., on Components and Colloidal 



Behavior of Plant Protoplasm 53 



on Interrelation of Photosynthesis and 



Respiration 64 



on Reagents and Amino-Acids 68 



on Rate of Respiration of Leaves in 

 relation to Amino-Acid and Carbo- 

 hydrate Content 63 



on Reduction and Dehydration of Pen- 

 tose Sugars 64 



on SweDing of Agar in Solutions of 



Amino-Acids and Related Compounds 57 



Spooner, John C m, x 



Stanton, Hazel M 151 



Star-Clusters, Investigations of 242 



Stark, Mary B 331 



State Institution, Statistical Studies of 154 



Steiner, W. F 284, 304 



Stellar Interferometer 250 



Stellar Photometry 239 



Stellar Spectroscopy 245 



Stenstrom, Nils 269, 272 



Sterility between Distinct Species 138 



Sterilization Laws 154 



Sterling, Allen 284, 302, 303, 305, 309 



St. John, Charles E., 213, 218, 219, 220, 221, 224, 

 226, 227, 228, 258, 260. 



Publications by 32 



Stock, Leo 183 



Stoll, Norman R 157 



Storrow, Mrs. James J 274 



Stout, A. B 49 



Streeter, George L v 



Report as Director of Department of 



Embryology 83-106 



Publications by 22, 32 



Strom, C 290 



Stromberg, Gustaf 217, 220, 245 



Publications by 25, 32 



Strong, L. C 137, 331 



Sturges, Mary M 152 



Sturtevant, A. H 329 



Publications by 32 



Sulphuric Acid, Aqueous Vapor-Pressure of 



Dilute 337 



Sun's Magnetic Axis, Period of Revolution of 225 



Sun-Spot Hypotheses 223 



Sun-Spot Spectrum, Mount Wilson Map of 224 

 Superior Olive, Study of, Publication by 



George B. Jenkins 21 



Surrey, N. M. Miller 181 



Sustentacular Cells and Hair Cells in Devel- 

 oping Organ of Corti, Pulilication by 



O. Van dcr Stricht 21 



Swann, W. F. G 285 



Publication by 32 



Talbot, Fritz B 268 



Publications by 33, 274 



Tamaru, S., Publication by 32 



