163 



than in the gutters, though in them it 

 gught never to stagnate. 



If, in cutting the above works, any very 

 low part or deep ditch obstruct the pro- 

 gress, it will be easy to carry the water 

 over it, by making a continuation of the 

 feeder or gutter, by means of a few boards 

 nailed together ; and this carry-bridge, as 

 it is called, should be of rather larger di- 

 mensions than the respective feeder or 

 gutter, that no obstruction be given to the 

 water in its course. 



If a road or small eminence oppose the 

 extension of your works, this obstacle, 

 likewise, will readily be removed, by con- 

 veying the water underneath, by means 

 of a trunk, consisting of four strong boardaf * 

 nailed together, leaving likewise a passage 

 of sufficient dimensions to give the wat^r 



a free 



