1G8 



THE OCEAN. 



If the permanent or periodical water-courses open for themselves 

 a passage through the bank, these very rivers, on the other hand 

 serve to bring the inland shore and the sea shore gradually closed 



Mouth of the Liamone, 



together by deposU.ng then- alluvium in fhe interior la^unes The 

 reeds and other plants which delight in the turbid wate^ eon! 

 tribute also to the transformation of the ancient bays into mar hes 

 and firm ground. Beds of vegetable detritus accumuIatedTn the 

 bays dunng a succession of years and centuries, rise in time ab ve 



