ICE AND GLACIERS. 



123 



ultimately be observed, notwithstanding the slow rate at 

 which they take place, and in spite of the chaotic confu- 

 sion of crevasses and rocks which the glacier exhibits. 



Besides rocks and stones, other objects which have 

 accidentally alighted upon the glacier are dragged along. 



Fig. 18. 



In 1788 the celebrated Genevese Saussure, together with 

 his son and a company of guides and porters, spent 

 sixteen days on the Col du Greant. On descending the rocks 

 at the side of the cascade of the Glacier du Geant, they 



