CXXX INDEX. 



or ancient doctrine of the Cosmos, p. 5, 15. Order, unity, beauty, and harmony 

 of, p. 58, 20, 21. Pliny's History of, p. 59. 



Nebulae, p. 7477, 141143 ; Notes 32, 112. 



Nebulous milky way, p. 141, 142 ; Note 113. 



Nebulous stars and planetary nebulae, p. 75, 76, 130, 143 ; Notes 31, 95. 



Nebulous matter, supposed origin of the heavenly bodies from, by condensation, 

 p. 7375, 85, 86, 90. 



Newton, raised the question of the difference between the attraction of masses and 

 molecular attraction, p. 50 ; Note 22. Approved strongly of Varenius's Gene- 

 ral arid Comparative Geography, p. 54 ; Note 25. Considered that the other 

 planetary bodies of the solar system are probably " composed of the same 

 matter with this earth : viz. earth, water, and stones, but variously concocted," 

 p. 122 ; Note 85. Assigned 7^75- as the compression of the earth on the hypo- 

 thesis of homogeniety, p. 155, 156 ; Note 129. 



Newtonian axiom, of the identity of the force of gravitation in the most various 

 bodies, confirmed by pendulum experiments, especially those of Bessel, p. 52. 



Nicholson, description of lightning clouds without audible thunder, p. 335. 



Nilsson, depression of the south coast of Sweden, p. 287. 



Nobile (Antonio), experimental investigations on the influence of the height of the 

 barometer on the level of the sea, p. 290. 



Noggerath, counted 792 annual rings in a trunk found in lignite or brown coal, 

 p. 273. 



Nomenclature, scientific, and changes in it proposed at different periods, p. 44, 45. 



Nordmann, on certain minute animals in the eyes and gills of fishes, p. 344. 



Norman (Robert), invented the inclinatorium, or dipping needle, in the sixteenth 

 century, Note 144. 



Numbers, power of, in science, p. 70, see Mean numerical values. 



Ocean (general account of), p. 279, 294304 ; Notes 362374. Its extent relatively 

 to that of the dry land, p. 279, 280 ; Notes 335, 336. Its depth, p. 150, 294. 

 Decrease of temperature at increasing depths, p. 295, 296. Its general uni- 

 formity and constancy of temperature, p. 296 ; Notes 363, 364. Immense 

 abundance of animal life, p. 303, 341, 342. Influence on climate, p. 296, 

 815321, 323 ; Notes 389. On human affairs, p. 153, 283, 286, 304. Tides, 

 p. 298, 299 ; Note 367. Currents, p. 299302 ; Notes 368-373, and Editor's 

 addition to 373. Phosphorescent light, p. 189, 303. Impression produced by 

 its contemplation, p. 303, 304. 



Oersted, connection of magnetism with electricity, p. 175, 176; Note 166. 

 Olbers on comets, p. 96, 102 ; Note 49. Explanation of a supposed occasional 

 upward movement of aerolites, p. 114; Note 65. Periodicity of the August 

 meteors, p. 115. Expected return of an exceedingly brilliant display of 

 November aerolites in 1867, p. 117 ; Note 75. Supposed retardation of Novem- 

 ber aerolites, Note 66. On the variations in the intensity of the Zodiacal 

 light and vibrations in the tails of comets, p. 132 ; Note 99. On the light of 

 stars and the transparency of celestial space, p. 142 ; Note 116. Mean num- 

 ber of aerolites visible per hour, Note 60. Velocity of aerolites computed on 

 the hypothesis entertained by Laplace of a lunar origin, Note 69. Remark 

 that no fossil meteoric stones or aerolites have yet been found in secondary 

 and tertiary formations, Note 83. 



Olmsted (Denison), of Newhaven, Massachusetts, on the great fall of November 

 aerolites in North America in 1833, p. Ill, 114, 116 ; Note 66. Small and very 

 numerous aerolites resemblin phosphorescent lines," p. 107; Note 59. 



