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THE NATIONAL GEOGRArHIC MAGAZINE 



Photograph by George R. King 



WHERE PRISONERS OP WAR ARE PORCED TO PlGHT THEIR BRETHREN 



A typical sector near Highland Light, Massachusetts, where the sea enemy uses captured 

 boulders, torn from cliffside defenses, as projectiles with which to batter down the ramparts. 

 Note the prisoners "left upon the wire" at the beachline. 



eastern entrance to Nantucket Sound, 

 one sights Nantucket Island in the dis- 

 tance. On the south side of this island 

 the retreat of the cliffs is often as much 

 as six feet a year. 



Further to the west lies Marthas Vine- 

 yard, also an outpost of the land. Here 

 there are rearing ramparts of rock a hun- 

 dred feet high, but even they cannot en- 

 tirely withstand the incessant attacks of 

 the indomitable sea. 



To the southwest of Marthas Vineyard 

 lies the desolate island of "No Man's 

 Land," which is well worthy the name it 

 bears. Gradually the sea is tearing away 

 its vitals, and it is predicted that by the 

 end of the present century it will disap- 

 pear beneath the waves forever. 



In the case of the Cape Cod Peninsula, 

 we saw how the land had used the ice 

 of geologic times as its ally against the 

 sea, but when we come to Long Island 



