362 



GEOLOGY. 



been shifted but a short distance ; but in other cases it has traveled far. 

 The spit is usually either straight or in conformity with the general 



Fig. 320. — Map showing that in the early stages of the simphfication of a shore-line 

 the irregularities are increased. The numbers indicate the depth of water in 

 fathoms. (From chart of C. and G. Surv.) 



course of the shore-current, but since the Uttoral current itself is sub- 

 ject to alteration as the result of shifting winds, the spit may depart 



