4,QQ INDEX. 



Museum. List of donors to ^ '46 



National, necessity of 16 



Work done in 1866 44 



Myriapoda. On the collection of, by H. C.Wood. 395 



Natural History. Dr. Gosse"s report on 291 



Neptune. Orbit of -' 18 



Nervous System. Eesearches of Magendie and others - 107 



Researches of Sir Chas. Bell 118 



Newark, Ohio. Ancient earthworks at 359 



Newcomb, Prof. S. Articles referred to 31 



Investigation of orbit of Neptune - .18 



Newton, Prof. H. A. Articles referred to 31 



Nicaragua. Explorations in 27 



Nobili's experiments on colors 231 



Norton, Edw. Specimens referred to - 28 



Norway. Statistics of mountains, lakes, and snow-line 435 



Officers of the Institution 5 



Olmutz. Pile-work antiquities of ; 363 



Optical experiments and researches 211 



Organization. Plan of .■ 15 



Origin of man and races 329, 344 



Orizava volcano. Account of 432 



Osten Sacken, Baron. Specimens submitted to'. 28 



Ozone, Soret's results 294 



Pacific coast of United States. Explorations on 27 



Palmer, Dr. E. Explorations by. 27 



Panama. Explorations in 27 



Parsons, D. B. Explorations by 27 



Patent Office ----- 17 



Patterson, Hon. J. W. Acts of, as Eegent 72,73,74,75,76,78 



Peabody Institute, Baltimore 31 



Pease, Charles. Explorations by 26 



Peclet's experiments on colors - 242 



Pepin, Lake. Antiquities of 366 



Perrot's furnace for melting gold by ordinary gas 293 



Perrot, Louis. Sketch of........ 299 



Phalangidse. On collecting, by H. C. Wood 395 



Phantascope. Plateau's 216 



Phenakistoscope. Plateau's 216 



Philadelphia Academy of Sciences. Aid to explorations - 27 



Phoenix Iron Company. Builders of Smithsonian roof 17 



Photometer. Wheatstone's 214 



Physical atlas of North America, by G. Gibbs 868 



geography. Statistics of Norway 435 



sciences. Report on 291 



Physiology of vitality. Higgins on 379 



Magendie's researches .- - •- 91 



Pile-work antiquities of Olmutz 363 



Plantamour. Fact in horology observed by ^ 293 



on meteorology 294 



Plateau's experiments on colors 212, 226, 238 



Researches on figures of equilibrium of a liquid mass withdrawn from 



the action of gravity. 255 



