AND PROTECTION OF AGRICULTURAL LAND. 9 



enough to sweep away road metal, or even large material, 

 and especially where it has formed an acute bend in the bank, 

 and hollowed out a deep pool in the bed of the river, works 

 of a more expensive character may be required such as I 

 have shown on the accompanying cut, fig. 3, which has, with 



Fig. 3. 



modifications to suit the localities, been executed with good 

 effect. It consists, as will be seen, of round piles and cross 

 planking with back piles and cross ties backed with fag- 

 gots and clay. Upon the top of this rest layers of faggots, 

 the whole being surmounted by a turfed embankment, and 

 protected at the bottom by rubble stones. Figs. 4 and 5 are 

 sections of other forms of protection adapted to situations 

 where the depth of water is not so great, and with some modi- 

 fication in the arrangement and sizes of the materials to suit 

 special circumstances, I have found that the styles of con- 



