x.] ALPINE TRAl'ELS, 1843. 301 



Grindelwald before the winter cold set regularly iu. ' I 

 there' found/ he writes to Lord Cathcart, 1 ' an exact con- 

 firmation of the views which I have published respecting 

 the origin and structure of glaciers. I found the forms, 

 simple and compound, of the ribbon structure to be such 

 have described, including the gradual rise of what 

 1 have called the " frontal dip/' from a very low angle 



the lower end of the glacier, up to 75 towards its 



specially on the glacier of the Strahleck, above 



'niberg, where it forms the " Mer de Glace" of 



< Jrindelwald. The other principal affluent of that icy 



viz. tli e glacier descending from the Viescher Horner, 

 exhibits tin- same wrinkles exactly as those which I have 

 just described upon the Glacier du Ge'ant perhaps even 



T marked. As the lower glacier of Grindelwald 

 furnished an excellent example of all the modifications 

 which I lu^e elsewhere shown to belong to the canal- 

 shaped with branches, so the upper glacier is an 

 iitative, in its lower part, of the oval glacier, 

 of which I have taken the glaciers of the Rhone as a 

 t\pe ; whilst many of the tributary glaciers of Grindel- 

 wald and the Jungfrau bear ample testimony to the 



ral fact that the structure of glaciers is developed 

 durinir their progression, and after their primitive strati- 

 fication n annihilated by their being projected in 

 avalanches over appalling precipices. . . .' 



On September -J<Hh the winter snow bc^an, and after 

 being delayed a day by it at Rosenlaui, 'we passed/ he 

 writes, 'some starving days at Tlnm.' They then tra- 

 velled through Berne and Zurich, greeted by old friends 

 i'oth places, and at length arrived at Bonn with the 

 us, whom they had met at Mayence. 



i .niv mountain air had >< i ved Forbes as a walkin^- 



k, but it could not serve him as a crutch : and as the 



winter Mill cam-' ..n, and he still was moving northwards, 



it became a sei leetdon whether he could continue 



1 burgh, and attempt to undertake IP - 



