INDEX OF VOLUMES I TO XX. 69 



VOL. PAGE 



Nebula of Orion, Telescopic Research on the. E. S. llolden v 257 



To the Ring- (Poem). J. L. Stoddard xii DO 



Nebula), Constitution of. H. Schellen iii 129 



Constitution of the (Misc.) xii 118 



Formation of. W. M. Davis xiii 339 



Variability of the (Misc.) xiii 251 



Nebular Hypothesis. J. Le Conte ii 650 



Negro, Increase and Movement of the. J. S. Patterson xix 665, 784 



Intellectual Condition of the Savage (Misc.) xx 139 



Negroes in China (Cor.) xix 843 



Neison, E. Telescope, Most Powerful, in Existence xvi 337 



Nerves, Action of the Retinal (Misc.) xi 381 



Beginning of, in the Animal Kingdom. G. J. Romanes xiv 303 



Mode of Termination of, in Muscles (Misc.) xviii 853 



Transmission of Excitations in Sensory. Paul Bert xi 230 



Nervous Conditions, Muscular Expression of. F. Warner xx 584 



Depression, Indigestion as a Cause of. T. L. Brunton xviii 226, 374 



Nervousness, Curiosities of (Misc.) xv 282 



Neuralgia, Mechanical Vibrations as a Remedy in (Misc.) xix 280 



Storms and (Misc.) xv 281 



Newberry, J. S. Geological Survey of the Fortieth Parallel xv 302 



Ice Period, Causes of the Cold of the ix 280 



New York Island and Harbor, Geological History of xiii 611 



Sketch of, with Portrait ix 490 



New Caledonia, Commercial Products of (Misc.) xiv 834 



Newcomb, S. English Honors to (Misc.) v 125 



Sketch of, with Portrait xi 612 



New Guinea and its Inhabitants. A. R. Wallace xiv 742, xv 57 



and its People. W. G. Lawes xx 324 



Natural History in (Misc.) ix 767 



Population of (Misc.) iv 632 



Stone- Age Civilization in (Misc.) xix 429 



New Jersey, Arrow-Heads in (Misc.) i 253 



Asphalt and Amber in the Mud of (Misc.) xvii 718 



New Mexico, Zufii Indians of. F. Kett v 580 



Newton, An Unpublished Letter of Sir Isaac (Misc.) xix 572 



The English Precursors of xvii 669, 777 



New York City College (Ed. Tab.) xiii 106, xvi 695 



Sanitary Problems of (Misc.) xvii 419 



Island and Harbor, Geological History of. J. S. Newberry xiii 641 



Relics of an Ancient Race in Eastern (Misc.) xvii 2S6 



New Zealand, Climatology of (Misc.) ix 119 



Niagara (Misc.) ii 249 



Gorge, Age of the (Misc.) vii 631 



Some Observation on. John Tyndall iii 210 



The Past and Future of. W. D. Gunuing i 564 



Niaudet, A. Electric Candle, The xi 429 



Nicaragua, A Naturalist in ' v 89 



Marine Fishes in Lake (Misc.) xii 380 



Nickel-Ore, Occurrence of (Misc.) x 120 



Niemeyer, Paul. Open Air and Health xii 216 



