THE ICE AGE AND ITS WORK 



89 



Fig. 21. -perched block, near monthey, bas valais. 



by Scarborough to Holderness, while a branch descends 

 southward along the valley of the Ouse to York. Coming 

 back to its source on Shap Fell, a train of boulders of the 



Fig. 22.— perched block, five jules north-west of chambery, 



