COASTAL PLAINS 



395 



lagoons bordered on their seaward side by sand reefs, 

 where the winds have piled up the sand brought in by 

 waves. In some places these sand reefs are so situated 

 that they are valuable for habitation, as at Atlantic City, 



RICE SWAMP AT THE BORDER OF A NARROW COASTAL PLAIN. 



New Jersey, where a large summer resort has grown up, 

 or along the coast farther south, where a sparse popula- 

 tion finds its home on the broader reef. 



A coastal plain increasing in width toward the south 

 extends from New York to the Gulf. The western coast 



