A, E. Verrili—The Bermuda Islands; Geology. 107 
a. Erosion of the North Shore Cliffs, Islets, and Ledges. 
This is, naturally, the most conspicuous phase of erosion by the 
sea. Its effects and the resulting forms depend upon several factors : 
such as the degree of exposure to the sea, and whether there be out- 
Figure 15.—Cliffs of zeolian limestone on the north shore, showing two strongly 
marked planes of erosion, the upper one above high-tide level. The honey- 
combed rocks are hardened by infiltrations and coatings of calcite. 
Figure 16.—Eroded cliff, near Bailey Bay, north shore, showing masses of lime- 
stone fallen from the cliff, and not yet much undercut. 
lying reefs to break the force of the seas ; the depth of water near 
the shore; the violence of the wind; the height of the cliffs and 
the inclination or dip of the layers of rock ; the varying degrees of 
