AND PROTECTION OF AGRICULTURAL LAND. 



65 



sea, even at the risk of its beating somewhat heavily on the face 

 of the pilework and rising in pretty heavy spray above it, pro- 

 vided the passage of large bodies of water on the low-lying 

 land could be prevented. The cuts 9 and 10 show this work 





as it was executed in plan and section, from which it will 

 be seen that the main defence against the inroad of the 

 waves consists of a continuous line of nearly perpendicular 

 piling and planking, rising to the height of nine feet above high 



f. 10. 



water, while the shingle is encouraged to collect in front of this 

 line of timber walling by low groins and lines of connecting stakes, 

 forming rectangular inclosures, in which, when the shingle is depo- 

 sited, the waves seem to have no tendency again to scour out. 



