750 INDEX. 



Page. 



Natural knowledge, benefit of 704 



Nature of matter, Mendenhall on 331 



Nature liictures, by A. R. Dugmon- 507-515 



Needham, James G., papers by 58, 116 



Neptune, discovery of 137 



Nerves of sense, specific energy of 470 



Newcomb, Simon, on age of living world 480 



astronomical work of 138 



Peirce on work of 699 



New spectrum, by S. P. Langley 683-692 



Newton, A. H. , study of meteors by 144 



Newton, Alfred, on habits of Arctic fox 527 



New York Printing Exposition, act relating to lxiv 



Niagara Falls electric power station 351 



Niepce and Daguerre, photography founded by 131 



Niewenglovvski, M. , researches by 380 



Niger River, exploration of 418 



Nile, exploration of the 418 



Nile fioods, sun spots and 182 



Nineveh, excavations at 537 



Nippur, excavations at 543 



Nordenskjold, Baron, Arctic explorations by 422 



Norman, Mr. , killed by Chinese 634 



North America, exploration of, during nineteenth century 427 



Notable advance in color photograph j^ 523 



O. 



Ocean basins and continents, evolution of 269 



life, Brandt on 493-506 



Oceans, origin of, Sollas on 294 



Oersted, Hans Christian, experiments in magnetism Ijy 328, 335 



Old Testament history, chronology of 547 



Olney, Richard, .Smithsonian Regent x, 3, 4 



Olszewski, researches l^y •. 319 



Ontogeny, development of 466 



Oppert, Jules, Babylonian explorations by 645 



Optical instruments, progress in 124 



Ordnance and Fortification, Board of. xiv 



Ord, James T., collections from 52 



Organisms, evolution of, Sollas on ; 298 



in the ocean 493 



Orientalists, international congress of 21 



Origin and antiquity of man 279 



and permanence of species 267 



of man, Haeckel on 114 



of species, Herting on 468 



Orr, M. A., on the canals of Mars 166 



Osborn, Henry F. , restoration of extinct animals by 479, 484 



Outlaw beaver, study of, by Dugmore 517-522 



Owen, Thomas McAdory, bibliography 1 )y 117 



Oxya-na, restoration of 481 



Oxygen, discovery of 234 



