INDEX. 831 



Page. 



Smithsonian Institution, administration of 2 



correspondence of 16 



explorations by 7 



financial statement xix 



publications by . 7 



researches by 5 



Smoke Abatement Association 366 



in the atmosphere, effects of 359 



Smokeless appliances, use of 366 



Smoky air, results of 235 



chimneys, legislation against 364, 366 



Snake dance of Moki Indians 566 



Tusayan Indians 693 



Snow and hail, origin of 224 



Snow's experiments with bolometer 128, 129 



Snowstorms, electricity developed by 337 



Social environment, influence of 634 



Sodium wave length 118 



Solar energy, researches on 129 



force, effects of 642 



heat, cause of 792 



radiation . 317 



spectrum, researches on 6, 129 



Soot in the air, effects of 362 



Sound, Helmholtz on physical cause of 790 



not diminished by fog or rain 309 



propagation in air 309, 340 



waves, velocity of 309 



South Australia, exchange transmissions with 65, 66, 67 



South Kensington, biological study at 464 



Spain, exchange transmissions with 65, 66, 67 



international exchange treaty with 61 



Species, increase in number of 488 



Specific and generic names, formation of 468 



Spectro-bolometer, investigations with 78 



Spectroheliograph, Hale's 130 



Spectrum, atmospheric absorption of 341 



invisible solar 314 



lines, observations on 119 



photographs of 127 



solar, investigation of , 75 



visible, researches in 129 



Spencer, Herbert, quoted 446, 484 



Spitzer, H., cited 488 



Sprengel's experiments with carbonates 177 



Stahl, phlogistic theory of 497 



Stamford Parry, Herron & Co., courtesies from 64 



Stanton, T. W., in charge of Mesozoic fossils 39 



Starch and cane sugar, relation of 474 



Starcraft in early England 736 



State Department, exchanges of 63 



Stationery, expenditures for xxiii, xxvii 



Statuary, Greek, polychromy in 603 



polychromatic, exhibition of 618 



wooden 604 



