LIST OF PLATES 



Portrait of the Author Frontispiece 



To face page 



II. Fig. 3. A gallery in the grotto of the Morteratsch Glacier 



in January, 1907 260 



III. Fig. 4. Solar etching in the Morteratsch Grotto in Sep- 



tember, 1907 261 



IV. Fig. 5. Etching of ice by hoar-frost : Morteratsch Grotto, 



January, 1907 262 



V. Fig. 6 a, San Antonio (Cape Verde Islands). View of 



stream bed after three rainless years. (From a photo- 

 graph by H.S.H. Prince Albert I of Monaco) Back to 274 



VI. Fig. 6b. The same view as Fig. 6 a on the same day 



after a violent rain storm. (From a photograph by 

 H.S.H. Prince Albert I of Monaco) . . Back to 275 



VII. Fig. 7. Chemical and gravitational degradation of rock on 



Chilian coast 276 



VIII. Two views of the Lower Grindelwald Glacier taken from the 



same position 285 



Fig. i. Engraved in 1777. By recollection, the 

 glacier was in this state in 1867. 



Fig. 2. Photographed in September, 1909. The 

 degree of coincidence of the views may be judged by 

 the church which appears in both, and necessarily 

 occupies the same site. 

 IX. Two views of the Rhone Glacier . . . ... 286 



Fig. 3. From a print dating before 1856. According 

 to an engraving of 1 777, it presented the same appearance 

 at that date. According to recollection, at least one-half 

 of the lower glacier existed in 1883. 



Fig. 4. From a photograph taken in September, 

 1909. 



