INDEX. 715 



Page. 



New Zealand, exchanges with 51,53,54 



Niagara, annual recession of 223, 224 



depth of water at 223 



horsepower of 231 



international commission on 224 



tone of 224 



transmission of power of 229 



utilization of, Martin on 223 



Nickel-steel armor, invention of 511, 512 



Nilometer, use of 150 



Nobili's discovery of proper current 328 



Nomenclature, double names 468 



Draconian code of 462 



family names 478 



first species of genus not its type 474 



Gill on 457 



history of 457 



instability of 482 



international commission on 457 



making of names • 471 



misapplied names 465 



names for major groups 475 



subfamily names 480 



superfamily names 481 



trivial names 461 



typonyms 474 



use of terminations "on" and "nm" 465 



variants and similarity of names 469 



Nordenskiold's Arctic expeditions 282 



North American ethnology, act making appropriation for xlvii 



appropriation for 4 



detailed financial statement of xxii 



(See Bureau of Ethnology.) 



North German Lloyd, courtesies from 50 



North Pole, variation in 91 



Norway, exchanges with 51, 53, 54 



Number and measure, conception of 99 



Numismatics, Arab 612 



biblical 629 



early American 632 



Egyptian 612 



O. 



Obarrio, Melchor, courtesies from 50 



Observatories, mountain 9, 126 



Ocean, basin-making movements of 235 



constituents of water of 399 



density of 400 



deposits on bottom of 400 



discovery of bottom of, W. K. Brooks on 76 



greatest depths of 398 



horizontal and vertical circulation of 399 



physical and biological conditions of 397 



physical condition of, by Wharton 76 



temperature of 398 



