INDEX. cxxxvii 



Urville (D'), on the geographical distribution of ferns, Note 319. 



Valenciennes, fossil mammalia allied to marsupial animals, p. 265. 



Valz, change of magnitude in the nucleus of a comet at its aphelion and perihelion, 

 p. 98. 



Varenius (Bernhard), his general and comparative geography, and its approval by 

 Newton, p. 54 ; Note 25. 



Vegetation, zones of, on the declivities of mountains, p. 12, 13, 343, 344, 346 ; 

 Notes 5, 6, 429. See also Mountains, Himalaya, Cordilleras. Distribution of, 

 over the surface of the earth, or the geography of plants, p. 10, 11, 47 49, 

 342, 343, 345349 ; Notes 3, 420, 427429. Germs of vegetation, cells, inter- 

 nal movements, &c. p. 340, 349; Notes 431, 432. Fossil, see Palseophytology. 



Venetz, glaciers, p. 328. 



Venus, see Planets, p. 82 86. Her independent or phosphoric light, p. 97, 188. 



Vico, satellites of Saturn, p. 87. 



Vigne, snow-line on the two declivities of the Himalaya, Note 403. 



Vine, influence of climate on its successful cultivation, p. 319, 321, 322; Note 396. 

 See Wine. 



Volcanoes and volcanic phenomena generally, p. 9, 10, 13, 14, 146, 147, 151, 152, 

 189, 201203, 213235; And in the most general sense, 189235; Notes 

 213241. Mud, p. 211213. Volcancitos, p. 213 ; Note 210. See also Ther- 

 mal springs. Effects of volcanic action shewn on the surface of the earth 

 and the moon, p. 27, 216. 



Volcanic ashes, p. 225. Steam, p. 222, 223, 225. Storms, 223. 



Voltaic pile, p. 32, 36. 



Vrolik, anatomical researches, p. 351. 



Wagner (Rudolph) on race, p. 351 ; Note 435438. 



Wallich, his Flora Indica, Note 3. 



Walter, volcanic phenomena, Note 193. 



Wartmann, on the different number of shooting stars observed at the same time 

 at two places very near each other, Note 60. 



Webb, measurements of elevation and snow-line in the Himalaya, Notes 5, 403. 



Weber, anatomical researches, p. 351. 



Wentzel (Dr.), attributes sounds heard dunng aurora to other natural causes, 

 p. 186. 



Winds, p. 311, 312. Trade, p. 317. See Monsoons. 



Wine, influence of climate on its successful production and quality, p. 321, 322; 

 Note 396. 



Witham, first recognised the existence of couiferse in the vegetation of the* carbo- 

 niferous period, Note 322. 



Wollaston, assumption respecting the limits of the atmosphere, p. 294. 



Wrangel, coincidence between the fall of aerolites and the brightening of auroras, 

 p. 116 ; Note 75. Connection of aurora with cirro-stratus, p. 183; Note 173. 

 With particular districts, p. 184. Absence of audible sounds connected with 

 aurora, and those sometimes heard attributed to other natural causes, p. 185, 

 186. Wood-hills of New Siberia, Note 327. 



Xenophanes, comets, p. 92. Marine fossils in the marble quarries of Syracuse 

 and Faros, p. 25U 



