tvicity of the air near high water- 

 Uk,344 



Translator, notes by, 7; on tlie in- 

 crease of the earth's internal heat 

 with increase of depth, 25; siliceous 

 infusoria and animalculites, 26; che- 

 mical analysis of an aerolite, 45, 

 46; on the recent discoveries of 

 planets, 74 76; observed the comet 

 of 1843, at New Bedford, Massa- 

 chussctts, in bright sunshine, 86; on 

 meteoric stones, 97; on an MS., 

 said to be in the library of Christ's 

 College, Cambridge, 111; on the 

 term ' salses,' 152; on Holberg's 

 satire, ' Travels in the "World 

 Underground,' 164; on the Aurora 

 Borealis of Oct. 24, 1847, 188, 190, 

 194; on the electricity of the atmo- 

 sphere during the aurora, 195; on 

 volcanic phenomena, 198, 199; de- 

 scription of the seismometer, 200; 

 on the great earthquake of Lisbon, 

 206; impression made on the na- 

 tives and foreigners by earthquakes 

 in Peru, 212; earthquakes at Lima. 

 213; on the gaseous compounds of 

 sulphur, 214 ; on the Lake of Laach, 

 its craters, 215; on the emissions of 

 inflammable gas in the district of 

 Phaselis, 220 ; on true volcanoes as 

 distinguished from salses, 221; on 

 the volcano of Pichincha, 225; on 

 the hornitos de Jorullo, as seen by 

 Humboidt, 227; general rule on 

 the dimension of craters, 228; on 

 the ejection of fish from the vol- 

 cano of Imbaburu, 231; on the little 

 isle of Volcano, 232 ; volcanic steam 

 of Pantellaria, 233; on Daubeney's 

 work ' On Volcanoes,' 235; account 

 of the Island of Santorino, 240; of 

 the island named Sabriua, 241 ; on 

 the vicinity of extinct volcanoes to 

 'the sea, 243; meaning of the Chinese 

 term 'li, 1 245; on mineral metamor- 

 phism, 248; on fossil human re- 

 mains found in Guadaloupe, 250; 

 on minerals artificially produced, 

 269, 270; fossil organic structures, 

 273, 274; on Coprolites, 273; 

 geognostic distribution of fossils, 

 278; fossil fauna of the Sewolik 

 hills, 281 ; thickness of coal mea- 

 sures, 284; on the amber pine 



forests of the Baltic, 287; elevation 

 of mountain chains, 290; the din- 

 oruis of Owen, 291; depth of the 

 atmosphere, 307 ; richness of organic 

 life in the ocean, 315 ; on filaments 

 of plants resembling the spermatozoa 

 of animals, 350 ; on the Diatomaceae 

 found in the South Arctic Ocean, 

 351, 352; on the distribution of the 

 floras and faunas of the British Isles, 

 357, 358; on the origin and diffu- 

 sion of the British Flora, 363, 364. 



Translatory motion of the Solar Sys- 

 tem, 135140 



Trogus, Pompeius. on the supposed 

 necessity that volcanoes were de- 

 pendent on their vicinity to the sea 

 for their continuance, 242, 243; 

 views of the ancietits on spontaneous 

 generation, 355. 



Tropical latitudes, their advantages 

 for the contemplatlor of nature, 11, 

 12; powerful impressions from their 

 organic richness and fertility, 13; 

 facilities they present for a know- 

 ledge of the laws of nature, 14; 

 transparency of the atmosphere, 100, 

 101 ; phosphorescence of the sea, 1 97. 



Tschudi, Dr., extract from his ' Tra- 

 vels in Peru.' See Translator's note, 

 212,213. 



Turner, note on Sir Isaac Newton, 

 120. 



Universality of animated life, 351. 



Valz, on the comet of 1 618, 91. 

 Varenius,Bernhard,his excellent gene- 

 ral and comparative Geography, 48 ; 

 edited by Newton, 49. 



Vegetable world, as viewed with micro- 

 scopic powers of vision, 349, 350; 

 its predominance over animal life, 

 352. 



Vegetation, its vari^xl distribution on 

 the earth's surface, 8 10, 43; rich, 

 ness and fertility in the tropics, 12 

 14 ; zones of vegetation on the decli- 

 vities of mountains, 8 11, 355 

 360. See Etna, Cordilleras, Hima- 

 layas, Mountains 



Vico, satellites of Saturn, SI. 



Vigne, measurement of Ladak, 340. 



Vine, thermal scale of its cultivation 

 331. 



