196 



INDEX. 



S 



Sand-cones, 116. 



Scientific facts, connection of, 72. 



Siedelhorn, view from the summit of, 

 146. 



Snow, its conversion into ice, 156 ; con- 

 solidation in Alpine regions, 166; 

 line, 49; its formation in Russian 

 "ballrooms, 5; in subterranean sta- 

 bles, 5, 14; in polar regions, 21; its 

 architecture, 29-32, 34, 91 ; absorbs 

 solar heat, 100. 



Solidifying power of camphor and met- 

 als, 173. 



Source of the Severn. 2; the Thames, 

 2 ; the Danube, 2 ; the Rhine, 2; the 

 Rhone, 2; the Ganges, 2; the Eu- 

 phrates, 2; the Garonne, 2 ; the Elbe, 

 2 ; the Missouri, 2; the Amazon, 2 ; 

 Albula, 2; the Arveiron, 38; the 

 Aar, 59. 



Stalactites of Alpine crevasses, 100. 



Steam, its condensation. 3, 4. 



Sunbeams, office of, 19-21. 



Sun, its heat the source of Alpine ice, 7; 

 vibratory motion of the aioms of 

 the, 11 ; position of, 19 : indirect 

 heat of the, 23. 



Switzerland, ancient glaciers of, 145-147. 



Theodolite, description of, 63; use of, 



64, 65. 

 Theory, of Dilatation, 155 ; developed by 



Be Charpentier, 156; sliding, 156; 



plastic, 156-160; viscous, 161-163; 



regulation, 163-167; of glacial epoch, 



155-167. 

 Trade-winds, 20. 

 Transverse crevasses, formation of, 104, 



105. 

 Trelaporte, promontory of, 44; motion 



of the water through the narrows of, 



79. 



U 



Universe, order of the, 32. 



Valley, of Hash, 146, 147; Black, 151. 



Vapor, in the atmosphere, 5. 



Viscous theory, advocated by Prof. 



Forbes, 161 ; rejected by M. AgassxZ, 



162. 



W 



Water, changes of volume of, 118-122; 

 maximum density of, 120; effects of 

 expansion of, 121 ; not a solitary ex- 

 ception to general law, 124 ; mo- 

 lecular expansion of, 125-127; tem- 

 perature necessary to freeze the sea, 

 132; special solidifying power of, 

 173; freezing-point of, 168. 



Waves, of light, 8-11, 127 ; length of. 12 ; 

 of heal, 12. 



Whiteness of a clean glacier. 43, 176 ; of 

 Margelin See, 138, 116; of snow, 176; 

 of ice formed in freezing mixtures, 

 177. 



THE END. 



