MOUNTAIN SCULPTURE. 



271 



portion carried away by erosion. It is evident that the drainage of 

 each table is against the cliff ; and every cliff, therefore, recedes partly 



Fig. 244.— Bird's-eye View of the Terrace Canon (after Powell). 



by under-cntting by a river and partly by rain- wash on its face. In 

 some cases, where the lifting of the strata was dome-like, the receding 



