INDEX. 



^07 



v 



Nilson and Petersson,261. 



Nipher, Prof. F. E., IDS, 121, 152, i55, 175, 



181. 

 Nippoldt, Dr., 151. 

 Nitrification, 260, 546. 

 Nitrogen compounds in the cereals, 554. 



pure, 259. 

 Nitrogenous constituents of plants, 553. 

 Nitrous oxide for producing cold, 231. 

 Nobbe, 550. 

 Nobel, 602. 

 Nobile, A.,S, 77. 



Nocturnal variations of temperature, 165. 

 Nodal points in tubes, position of, 222. 

 Nogues, 129. 

 Nohl in Sweden, 280. 

 Non-metallic chemistry, 25S. 

 Nordenskiold, Prof. A. E., 2S0, 2S1, 2S3, 2S4, 

 323. 

 Arctic Expedition, 524. 

 Nordstedt, 517. 

 North, 268. 



North American fresh-water fishes, 458. 

 trout and salmon, 467. 

 Polar Expedition, 1S75-1S76, 36S. 

 temperate realm, 484. 

 Norwegian North Atlantic Expedition, 



324. 

 Notes of insects, 443. 

 Noyes, Hon. William Curtis, 55. 

 Number and capacity of the iron and steel 



works of the United States, 616. 

 Nummulitic rocks, 29S. 

 Nutrition of domestic animals, 563. 

 Nylander, 515. 



O. 



Obensteiner, Dr. H., 374. 

 Ober, F. A., 478. 



Object-glass, new oil-immersion, 355. 

 Observations of the moon, old, 34. 

 Observatories, American, 46. 

 European, 76. 

 new, 37. 

 of Italy, 76. 

 Observatory (monthly, London), 2. 



new magnetic, 106. 



of Autioch College. 76. 



of Bologna (Italy), 79. 



of C. H. Rockwell, 74. 



of Chas. W. Pleyer (Eliza- 

 beth, N. J.), 59. 



of D. \V. Edgecomb, 65. 



of Edw. C. Barnard, 67. 



of F. E. Seaerave, 70. 



of F. Hess (Fort Dodge), 60. 



of Florence (Italv), 79. 

 .- of Geo. \V. Fitz,69. 



of H. Carvill Lewis (German- 

 town, Pa.), 63. 



of Haverford College, .65. 



of Henry Draper, 65. 



of Henry M. Parkhurst, 

 Brooklyn. 49. 



of Henry Mills, Buffalo, 49. 



of Milan (Italy), 80, 86. 



of Modena (Italy), 79. 



of Naples (Italy), 77. 



of O.C.Wendell, 68. 



of O. Mulvery, 65. 



of Padua (Italv), 80. 



of Palermo (Italy), 77. 



of Pennsylvania College, 64. 



of Prof. Lewis Swift, 71. 



| Observatory of the Capitol (Italy), 78. 

 of the Roman College, 78. 

 of the University of Missis- 

 sippi, 69. 

 of the University of the State 



of Missouri, 56. 

 of Turin (Italy), SO. 

 of Vassar College, 70. 

 of Von Konkoly (Hungary), 



85. 

 of Washington University, 



73. 

 of W. Meikleham (Fordham, 



N. Y.), 60. 

 of Win. Robert Brooks, 70. 

 of Win. T. Gregg, 69. 

 of Yale College, 6S. 

 Ocean, the, 112. 



meteorology, 177, ISO. 

 Oceanica, anthropology of, 389. 

 ethnography of, 398. 

 Octopus pnnctatus, 433. 

 Oellacher, 423. 



O'Gyalla Observatory, Hungary, 11. 

 Oidium albicans, 51S. 

 Oldham, Prof. Thomas, 624. 

 Oliver, Prof., 510. 

 Olivier, 234. 



Olney, Stephen, 510, 025. 

 Onasetvich, Lieutenant, 323. 

 Oncorhyncbus, 470. 

 Oppolzer, 111. 

 Optical phenomena, 1SS. 

 Optometer, an, 236. . 

 Oral gestation in amphibians, 476. 

 Oregon, mammalian fauna of, 499. 

 Organic chemistry, 264. 

 Organisms suspended in the atmosphere, 

 362. 

 which cause nitrification, 54$ 

 Organs of smell in butterflies, 446. 

 Origin of atmospheric electricity, 184. 



of vertebrate limbs, 456. 

 Ornithinic acid, 26S. 

 Orograph, 199. 

 Orth, 542. 

 Orthoclase, 27S. 

 Orton, Prof. James, 339. 

 Osborn,H.F.,4S3. 



Henry J., 496. 

 Oscillations of the magnetic needle, 105. 

 Ostensacken, Baron, 446. 

 Osteology, general, 483. 

 Otis, Dr. Geo. A., 390. 

 Otto silent gas-engine, the, 594. 

 Ovipak iron, 2S6. 

 Owen, Prof. R., 456, 472. 

 Oxygen, density of liquid, 231. 

 in metallic silver, 264. 

 in sea-water, 259. 

 Oyster-beds of the Chesapeake Bay, 31S. 

 Ozone, 158. 



P. 



Packard, Dr. A. S., 203, 409, 43S, 439, 442, 

 452. 



Page, Prof. F. J. M., 256, 472, 569. 



Pageustecher's General Zoology, 410. 



Paikull, S. R., 282. 



Palaeolithic implements, 3S2. 



Palagi, Director, 79. 



Palander, Captain, 323. 



Paleontology of the vertebrates, chrono- 

 logical, 496. "* 



