490 



INDEX. 



Quagua-Pichincha, its meaning, 



242. 



Gualatieri, volcano of, 287. 

 Guanacaure, a volcano, 274. 

 Guanahuca (Guanegue?) volcano 



of, 290. 

 Guettard's observations on extinct 



volcanoes, 330. 

 Gunung, the Javanese term for 



mountain, 299. 

 Gunung Tengger, a volcano in 



Java, vast size of its crater, 301. 

 Guyot of Provins, his mention of 



the magnetic needle, 53. 



Hair-glass, a volcanic product, 

 392. 



Hall, Capt. Basil, experiments to 

 determine the mean tempera- 

 ture of places within the tropics, 

 40; measurement of the vol- 

 canoes of Old Guatemala, 277 ; 

 his admirable description of 

 Sulphur Island, 377. 



Halley's theory of four magnetic 

 poles, 58. 



Hallmann, his classification of 

 springs, 205. 



Hansteen on the magnetism of 

 the earth, 66. 



Harton, pendulum experiments 

 at, relative to the density of the 

 earth, vii. 



Hawaii, the volcanoes of, de- 

 scribed, 395. 



Heat, distribution of, in the in- 

 terior of our globe, 34 ; hypo- 

 thesis of the depth of the fused 

 interior of the earth below the 

 present sea level, 246. 



Hecla, the volcano, its aspect, 

 243 ; infrequency of its erup- 

 tions, 255 ; how classified by 

 Waltershausen, 351. 



Helena, St., volcanic phenomena 

 of, 352. 



Helen's, St., Mount, a vclcano, 

 417. 



Hell, the cold, of the Buddhists 

 196. 



Hephsestos, Volcano, the holy isle 

 of, 257. 



Herefordshire, sedimentary rocks 

 of, 231. 



Hesse, on the volcanoes of Central 

 America, 272. 



Hiera, volcanic phenomena upon, 

 described by Aristotle, 229. 



Himalayan chain, four highest 

 mountains of the, 287 ; known 

 to the Greeks as the elongated 

 Taurus, 434. 



Hobarton, magnetic observations 

 at, 100. 



Ho-cheu, a volcano, also called 

 Turfan, 356. 



Hood, Mount, an extinct volcano, 

 417. 



Hooker, Joseph, on the hot springs 

 of Momay, 197. 



Hopkins on earthquakes, 168, 171, 

 174. 



Horary variation of the declina- 

 tion not ascribable to the heat 

 of the sun, 82; maxima and 

 minima, at various magnetic 

 stations, 109. 



Hornblende and augite, 475. 



Hornos or Hornitos. See Hornitos. 



Hornitos, low volcanic cones, 1 83 ; 

 further notices of them, 316, 

 322. 



Horsburgh, description of Barren 

 Island by, 383. 



Ho-schan and Ho-tsing, of Eastern 

 Asia, 219. 



Humboldt, Alexander von, ob- 

 servations of temperature in 

 Mexico and Peru, 41 ; magnetic 

 observations by, 70, 96 ; his 

 determination of the magnetic 

 equator, 104 ; observations of 

 polar bands, 155 ; visit to the 

 scene of the earthquake of 

 Kiobamba, 1 73 ; observations of 

 the phenomena of an eruption 

 of Vesuvius, 181 ; barometrical 

 measurements of the same 

 mountain, 247 ; his definition 

 of the term "volcano," 287; 



