502 INDEX. 



Page. 

 Museums. Requisites of 18 



National Academy of Sciences 54, 109 



National Library 56 



\ National Museum 18,55,72,76,101,115 



Natural history of organized bodies by M. Marey 277 



prize questions 481 



Newcomb, Professor S. Acknowledgment to 55 



Investigations of planet Neptune 54 



New Haven Journal. Account of lightning discharge 320 



North German Lloyd Steamship Company. Acknowledgments to 39, 112 



Numeration. Art of 391 



Eeport on new system 119 



Proposed new system 116 



Nystrom, J. W. Weights and measures 119 



Observatories at Dorpat and Poulkova 370 



Officers of the Institution, May, 1868 5 



Oregon. Trade language of 22 



Organization. Plans of 7, 15 



Orton, Prof. James. Explorations 49 



Osborne, J. A. Efl'ect of electricity on telegraph 322 



Osten Sacken, Baron E. Diptera 22, 52 



Pacific Mail Steamship Company. Acknowledgements to 39,42,112 



Pacific Steam Navigation Company. Acknowledgements to 39, 1 12 



Palteoutology of the upper Missouri. Meek and Hayden 21 



Palmer, Dr. E. Collections by 45 



Panama Eailroad Company. Acknowledgements to 39, 112 



Parker, Hon. Peter. Election as Eegent - 108 



Acts of, as Eegent 108,109,112,113 



Elected member of Executive Committee 108 



Action proposed relative to canal 113 



Eeport of executive committee 101 



Patterson, Hon. J. W. Eesolutions of, relative to Prof. Bache 62 



Peltier, Jean Charles Athanase. Memoir of, by his son, F. A. Peltier 158 



Pettigrew, Dr. James Bell, on aeronautics 325 



Philbrick, J. D. School architecture 24 



Phillippi, Prof. A. E. Collections by 50 



Philosophy. Prize questions 481 



See Eoyal Institution 203 



Photo-chemistry. By M. Jamin 363 



Photography, celestial. By Prof. H. Draper 21 



See Jamin 363 



Physics. See Marey 's lectures 277, 284 



See memoir of Peltier 158 



See Eoyal Institution 203 



See Faraday 227 



Physiology. See Marey 's lectures 277 



Pickard, J. L. School architecture 24 



Pidgeon, William. Account of mounds 403 



Pike, Nicholas. Account of cyclone 477 



Plants. Classification of 246, 275 



ofAlaska. Sketch of.... 433 



Poe, Gen. O. M. Accoimt of lightning discharge 319 



Investigations 54 



