142 STUDIES, SCIENTIFIC AND SOCIAL 



in Switzerland and its bearing on that most curious and 

 fascinating problem — the Great Ice Age, its causes, its 

 duration, and its effects, may attract the attention of some 

 readers who are about to visit the district, and enable them, 

 when they come in sight of the Kirchet or visit the 

 celebrated gorge, to appreciate the remarkable and almost 

 unique character of the natural phenomena before them, 

 and the marvellous episode in the recent geological 

 history of the north-temperate zone which has produced 

 them. 



