CHAPTER IX 



COAST LINES 



138. Coast Lines. On examining a map or chart of an 

 extended coast one cannot fail to be impressed with its 

 irregularity. Although it may extend for long distances 



POSIT ANO. 

 A precipitous and densely populated coast. 



in an almost unbroken straight line, as along the south- 

 eastern part of the Bay of Biscay, yet if we follow even 

 this coast far enough in either direction, it becomes mark- 

 edly irregular. Islands composed of the same material as 



292 



