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AGRICULTURE. 



BOOK I. 



SECT. III. OF THE MODES OF IMITATING THESE FORMS BY 

 ART, OR OF IMPROVING UPON THEM. 



1. In many places on almost every sea-coast, we see shores of 

 the first kind (fig. I. a.) ; and it will not be denied, that if a 

 trench were cut down behind one of them, as represented in 

 this figure by b, the bank or shore, though now detached as it 

 were from the land, would be equally strong and capable of 

 resisting the pressure of the sea as before. This being granted, 

 it follows, that if a bank or mound were moved and placed two 

 or three miles from shore, within the bed of the sea, as suppose 

 at c, it would be as strong as ever, and no more liable to be 

 broken down by the water, than when in its former situation ; 

 and that, here, it will as completely guard the sea from the in- 

 termediate space of two or three miles, as it formerly preserved 

 it from the bottom of the trench b, of three or four feet wide. 



2. Shores of the second kind, (fig. 5.) more. or less perfect, 

 abound on most sea-coasts. The cause of their strength and 

 duration has been already noticed. They cannot be wholly 

 imitated with advantage; but excellent hints may be taken 

 from them for defending bold, abrupt, broken shores composed 

 of earth, or of earth and rocks mixed. It will at once occur, 



