FETCH, EXPOSURE, AND WAVE-POWER. 



79 



I measured one of these stones, which had been thus dis- 

 placed, lying near the edge of the cliff, and found it to be 

 12 feet x 12 feet x 4 feet, representing a weight of at least 

 40 tons. 



Scale I inch 20 feet. 



B 



Block weighing 15 



FIG. 13. Sketch illustrating effect of waves on coast south-westward from Wick Bay. 



All of these stones have lichens growing upon them, and 

 grasses and sea-pinks are growing amongst them. It is there- 

 fore evident that they have not been recently disturbed ; and, 

 in view of the great weight of many of them, and their height 



