ILLUSTEATIONS xiii 



ITG. PAGE 



40. Sketch Map of the Swiss Rivers 291 



296 

 299 

 308 

 309 

 311 

 317 

 318 



41. Diagram in illustration of mountain structure 



42. Sketch Map of the Aar and its tributaries . 



43. River system round Chur, as it used to he . 



44. River system round Chur, as it is 



45. River system of the Maloya 



46. Final slope of a river . 



47. Do. do. with a lake 



48. Diagrammatic section of a valley (exaggerated). BB, 



rocky hasis of a valley ; A A, sedimentary strata ; 



B, ordinary level of river ; G, flood level . . 329 



49. Whitsunday Island. (After Darwin) . . . .359 



50. A group of Lunar volcanoes ; Maurolycus, Barocius, 



etc. (After Judd) 380 



51. Orbits of the inner Planets. (After Ball) . . .388 



52. Relative distances of the Planets from the Sun. (After 



Ball) . 389 



53. Saturn, with the surrounding series of rings. (After 



Lockyer) 395 



54. The Parallactic Ellipse. (After Ball) . . .413 



55. Displacement of the hydrogen line in the spectrum of 



Rigel. (After Clarke) 416 



PLATES 



BuENHAM Beeches 



Windsor Castle. (From a drawing by 



J. Finnemore) . ... To face page 13 

 Aquatic Vegetation, Rio. (Published 



by Spooner and Co.) . . . " " 145 



Tropical Forest, West Indies. (After 



Kingsley) " "179 



Summit of Mont Blanc . . . . " " 203 



