684 INDEX. 



Page 



Spectrum, corona 234 



meteor, by Pickering 231 



researches by Schumann 8 



solar, researc-hes in 25 



energy, study of 86 



zodiacal light 186 



Speech, record of acts of 242 



Spencer, Stanlej^, ballooning by 122 



Spontaneous generation 400, 423 



Sprague bequest xii 



Spratt, G. A 141 



Stanton, Timothy VV 106 



Starin, J. H 75 



Starks, Edwin Chapin 105 



Stars, changes in color of 162 



development of 154 



red, phenomena of 1 62 



Stassano, Henri, on aurora rays : 232 



Stead, J. E. , researches by 298 



Steam motors, improvements in 133 



Stearns, R. E. C, fossil shells 106 



Steere, J. B 33 



Stein, Robert 31, 33, 43 



Steiner, Roland B. , collections by 32 



Stejneger, Leonhard 1 7, 105 



Stellar evolution in light of recent research, by George E. Hale 149-163 



heat, Halm on 166 



temperatures 159 



Stevenson, INIatilda Coxe 55 



Stokes, Sir George, commends Astrophysical Observatory . 4, 25, 85 



Stoney , Johnstone 222 



Submarine boat, by Melville 103 



Sun, and its radiations, researches in 25 



chemical composition of 151, 161 



chromosphere, study of 161 



corona of. Hale on 160 



dimensions of 160 



disk, study of 161 



electric discharges in atmosphere of 235 



energy, utilizing, by Thurston 101 



envelope, absorption of 91 



gases in 1 74 



])olar streamers, study of 1 (iO 



l)rominences and corona 160, 184, 1S5 



Sun spots, periodicity of 161, 169, 188 



relation of S( )lar radiation to 25 



relation of, to aurora 188 



study of 161 



temperature, variations in 171 



Sunlight, pressure of 180 



Swanton, John R 42, 52 



Swiss lake dwellers 443 



Sylvestri, Felipi)e 36 



