b. 



Sediment motion along a cliff: a. A thick vertical 

 wall of sand- clay mixture was first molded in the basin 

 at an angle of 20° with the approaching waves; b. the 

 vertical wall was reshaped by the waves to form an 

 overhanging cliff with a small sandy beach at the foot,- 

 and c. the cliff was stabilized by pasting its surface 

 with a layer of hydrostone, and the motion of sedimen' 

 along the submerged beach was measured. 



FIGURE I 

 24 



