

346 INDEX. 



Sleep, summer and winter, of animals, i. 18, 185 ; ii. 48. 



Snow, limit of perpetual; inequality of this limit on the northern and 



southern declivities of the Himalaya, i. 98. 

 Sorata and Illimani ; their heights above the sea recently corrected, i. 57, 



96, 277. 

 Steppes and Deserts, Characteristics of the European, i. 2 ; African, i. 3 ; 



Asiatic, i. 4; South American, i. 7 ; analogies and contrasts between 



the steppes and the ocean, i. 2, 35. 

 Strato, his sluice theory, ii. 78. 

 Sugar-cane; of Tahiti, of the West Indies, and of Guiana, i. 31. 



Tacarigua, Lake of, i. 1 ; its scenery and vegetation, i. 27. 



Temperature. Contrast between the temperature of the east coast of America 



and the west coast of Europe in the same latitudes, i. 129 ; general 



remarks on the temperature of the United States of America, i. 131. 

 Thian-schan, one of the four parallel mountain chains in Central Asia, i. 



72, 82. 

 Thibet, occupying the valley between the great chains of the Kuen-liin and 



Himalaya, divided into Upper, Middle, and Little Thibet; its mean 



elevation and description, i. 81. 

 Tibbos, i. 67. 



Timpanogos, Laguna de, i. 44 ; is the Great Salt Lake of Fremont, 280. 

 Traditions of Samothrace, ii. 78. 

 Trees, age of, ii. 86 ; trees of highest growth, ii. 165. 

 Trisetum subspicatum, an inhabitant both of the Arctic and Antarctic Circles, 



ii. 186. 

 Tuaricks, i. 67. 



Urwald, or primeval forest, a name too lightly used, i. 261 ; true character 

 of a primeval forest, 262; description of the nocturnal life of wild 

 animals in the Urwald, 266. 



Vegetation, its propagation and extension over newly formed lands, ii. 8 ; the 

 absence of trees erroneously supposed to characterise hot countries, 10 ; 

 extensive arid tracts in countries otherwise of luxuriant vegetation a 





