824 INDEX. 



Page. 



Organic matter in air, methods of determining 402 



synthesis, study of 473 



vapors dangerous to health 250 



Organisms, living, in air 238, 242, 377 



primary evolution of 482 



relations of, to environment „ 701 



Oriental Congress, Smithsonian delegate to 17 



scholarship in present century 85 



Ornithology, field study of 85 



Osborn, Herbert, at Naples table 17 



Osten-Sacken, C. E., on bugonia of the ancients 85 



Ostwald, W. , on chemical energy 84 



Otto, Ludwig, statue painted by 618 



Oxford, biological teaching at 463 



Oxygen, biological role of 164 



characteristics of 150 



discovery of 149 



effect of reduction of 408 



on human health 207 



hydrogen and, Morley on 6, 83 



in atmospheric air 203, 204 



liquid, magnetic properties of 84 



necessary to life 166, 167 



original source of . 151 



plant absorption of 307 



properties of, in the air 206 



quantity in the atmosphere 151, 166, 207, 351 



weight of 150,203 



Outerbridge's experiments in gold films 124 



Owen, Professor, quoted 765 



Owen, Richard, anatomist 768 



Oysters, typhoid bacillus in 453 



Ozanam, M., cited 174 



Ozone, discovery and properties of 159 



distribution of 209 



formation of 210 



greater abundance in country air 160 



oxygen of high potency 159 



proj>erties and effect of, on human health 209 



relation to diseases 160 



sources of 160 



P. 



Pacific islands, origin of inhabitants of 519 



Pacific Mail Steamship Company, courtesies from 64 



1'ainting, Greek statuary 620 



wall, ancient Greek 621 



Palatki, Ariz., ruins at 564 



Palatkwabi, Tusayan legend of 560 



Palenque ruins 537 



Paleobotany, progress in study of 471 



Palgrave, Sir Francis 729 



Papago Indians, cooperation among 707 



expedition among 22, 43 



Paracelsus, quoted „ „ 496 



