INDEX. 347 



geological problem which has not been sufficiently considered, 12 ; 

 characteristic aspect of vegetation in the tropics, 30 ; characteristic 

 vegetation of the Alps and Andes at great elevations, 35. 



Vesuvius, measurements of height at different periods, ii. 225, 243 ; parti- 

 culars of the eruption of 1822, 228. 



Vital force, the, or Rhodian Genius, ii. 251. 



Volcauos of the Thian-schau chain situated in the interior of Asia far distant 

 from the sea, i. 88 ; structure and mode of action of, ii. 213 ; instances 

 of extensive, volcanic connection, 221 ; importance of repeating exact 

 measurements of the heights of craters, 224. 



Willows, ii. 28, 193. 



THE END. 



Wilson and Ogilvy, Printers, 57, Skinner Street, SnowhUl, London. 



