INDEX. 



603 



Natural history and zoology, 265. 



Nature of the invertehrate brain, 287. 



Nebraska, kaolin in, 221. 



Nebulie, exact observations of, 50. 

 spectra of, 20. 



Negri, De, 333. 



Nephrite and jade, 295. 



Nereid worm, habits and anatomy of, 336. 



Nessler, Dr., 881. 



Neubauer, Dr. C, 423, 500. 



Neuniayer, Dr., 151. 



New, Chai-les, 544. 



New Guinea, plants of, 359 

 'New Hampshire, Report of Fish Commis- 

 sioners of, 393. 



New Jersey Fish Commissioners' Report, 

 397. 



New Mexico, fossil elephants, etc., of, 303. 



New York Fish Commissioners' Report, 

 395. 



New Zealand, sending salmon eggs to, 407. 



Newcomb, Prof. Simon, 34, 52. 



Newmann, Edward, 544. 



Newton, 478. 



Prof. H. A., 4. 

 Sir Isaac, 1. 



Nezereaux and Garlandal, 420. 



Nichols, Prof., 537. 



Nickel-plating process, 515. 

 -plating solution, 516. 



Nitrate of amy], action of, 531. 



Nitrates, Schonbein's test for, 210. 



Nitric acid, action of, on metals, 197. 

 oxide gas, lamp for, 415. 



Nitrite of ammonium, 197. 



Nitro-glycerine, influence of heat ou, 458. 



Nobert's test-plate, 267. 



Noble, Captain, 456. 



Nocturnal radiation, 72. 



Nolan, Captain, 454. 



Noltke, Ernst Ferdinand, 544. 



Nordenskjold, Dr., S3, 242, 297. 



Normand, Dr., 535. 



North Cape, exploration around the, 296. 



Norton, Dr., 201. 



Numbering silk threads and fitbrics, 504. 



Nutritive value ofshortSjShipstuff, etc., 376. 



Nyren, Dr., 78. 



O. 



Oak, au aged, 349. 



Oak-wood, rendering orange-yellow, 495. 



Oaks of the United States,'350. 



size of famous, 350. 

 Obliteration of one sound by another, 181. 

 Observation of polar bauds, 95. 

 Observations of nebulje, 50. 

 Observatory of Washington, 21, 34. 

 Ocean currents, mechanical theory of, 65. 

 Ohio Fish Commissioners, 405. 

 Oil, a new drying, 357. 

 Oil-car, new, 442. 



-paint for floors, 497. 

 Oils, purification of vegetable, 497. 

 Oleandrine, 207. 

 Oleic acid and gum copal, 500. 

 Oleomargarine in butter, 424. 

 Olive and orange trees, disease of, 364. 

 Olive-oil and glycerine as substitute for 



yolk of egg ill tanning, 508. 

 Oliver, Dr., 534. 

 Olivier, 451. 



Omega nebula, changes in. 16. 

 Ouj'x, Mexican, 222. 



Optical notes by Lea, 155. 



Orbit of star 7 Coronfe Australis, 22. 



of star 70 (p) Ophiuchi, 23. 

 Ore, 284. 



Organ-pipes, cause of sound in, 179. 

 Oriranisms, action of ozone-water on low- 

 er, 287. 

 Origin of cold waves of air, 104. 



of cyclones, 127. 



of the red clay of deep-sea sound- 

 ings, 273. 



of volcanic ashes, 66. 

 Osmium, 206. 

 Otter, Baron von, 242. 

 Ovens, cement for, 509. 

 Overbeck, 96. 

 Owen, Prof., 315. 

 Owsjannikow, 296. 

 Oxide of sulphur, a new, 211. 

 Oxychloride of phosphorus, 19S. 

 Oxyrrhopns plumbeus, 316. 

 Oyster-culture in France, 385. 

 Oysters, fattening of, 410. 



reproduction of, 409, 

 Ozone acts on colors, 488. 



in the air, determination of, 194. 



uon - oxidation of carbonic oxide 

 by, 213. 



thermo-chemistry of, 216. 

 Ozone-water on lower organisms, 287. 



Pacific coast of South America, elevation 



of the, in recent times, 228. 

 Pacinotti, Dr., 164. 

 Packard, Dr. A. S., Jun., 328. 

 Paijkull,Dr.,242. 

 Palauder and Crazensteen, 242. 

 Paleontological discoveries. Marsh's, 282. 

 Paleontology, new hand-book of, 297, 

 Palm-tree, occurrence of, 361. 

 Palmer, Dr. Edward, 360, 

 Palraieri, Prof., 497. 

 Palmieri's dragometer, 497. 

 Papier-macho ornaments, etc., 4ST. 

 Paratfiu hardens plaster, 488, 



in beeswax, 500, 

 Parakite, the. 453. 

 Parallax of 1830 Groombrirlge, 32. 

 Parasites on the hermit crab, 335, 

 Parasitic moth, a, 331. 

 Parchment paper, dyeing, 4S9, 

 Paris Medical Journal, 529, 



Observatory, 29, 



pneumatic tubes in, 448, 



telescope, the great, 39, 

 Parker and Brady, 343, 

 Parkes, Dr., 204, 544. 

 Parthenogenesis in vertebrates, 275. 

 Parville, 4.')1. 

 Pasteur, 272. 



Peaks, table of highest, 244. 

 Peale,Dr.A.C.,246. 

 Pearce, N. B.,401. 



Pearl-oysters, artificial culture of, 409. 

 Peat as locomotive fuel, 447. 



beds, importance of, 368. 

 Pecuniary success of the Brighton aqua- 

 rium, 307. 

 Peinture hydrauliquc, 471. 

 Peiper, 512,51.3. 

 Peirce, C. S., 48. 

 Peligot, 138. 

 Pellagra, endemic, 585. 



