DISASTERS IX ZKA LAND. 



303 



record is that which, in 144(j, submerged more than 

 two hundred cities of Friesland and Zealand. For a 

 long time after this catastrophe, the summits of the 



Fig. 59. — Irruption of llic Sea in Zealaud. 



towns and the points of the steeples could bo seen 

 standing above the surface of the sea. 



We might multiply these examples of the fact that 

 the bottom of the sea is continually changing. Here 



