206 



PROCEEDINGS OP THE AMERICAN ACADEMY. 



On the western coast of Langeland and at the soutliern point are several enclosed 

 bays partly filled (Denm., Svendborg, Gulstav). The offsets indicate movements 

 in both directions. 



The bays on the southwest side of Chirikof island, Alaska, sliow several stages 

 of filling (C. S., 9191, old number 796). The sea built five bars from headland to 



SOUTHWEST ANCHORAGE 



CHIRIKOF ISLAND 



ALASKA 



Figure 19. Nearly Mature Filling of Bays. 



headland, in swinging curves satisfactory to itself. In the broadest bay there still 

 remain two lagoons, but the others are completely filled (Fig. 19). 



Kiska harbor on Great Kiska island, one of the Aleutian islands, has three hays 

 showing three stages of filling. In the central one there is a large lagoon com- 

 pletely enclosed, in the northern one a small lagoon remains, and in the southern 

 one the area back of the bar is completely converted into marsh (C. S., 9191). 

 The alongshore current is here probably from the left, witness overlap of bars to 

 the right, and streams crowded to right side of bays. 



(3) Bay filled (Maturity). — The last few examples in the previous section are 

 as near to mature forms of this kind of bay-bars as have been found in the present 

 study. Mature stages of bay-bars merge into mature ria-deltas so closely that one 

 can hardly separate them upon the map. When the bay is filled, the stream 

 mouthing in the bay will attempt to push forward its delta, and the shore form 



