CHAP. XTI 



THE BRITISH ISLES 



333 



coasts SO as to include the whole of the British Isles and 

 about fifty miles beyond them to the westward. (See Map.) 



MAP SHOWIXG THE SHALLOW BANK CONNECTING THE BRITISH ISLES WITH THE CONTINENT. 



The light tint indicates a depth of less than 100 fathoms. 



The figures show the depth in fathoms. 



The narrow channel between Norway and Denmark is 2,580 feet deep. 



Beyond this line the sea deepens rapidly to the 500 and 

 1,000 fathom lines, the distance between 100 and 1,000 



