Filling the Ditch 



487 



It is very important to get the dirt well filled in 

 about the tile and at the same time well packed, in 

 order that large open water channels may not exist 

 through which streams of water may flow in sufficient 

 volume to carry silt into the tile through the joints, 

 and also in order that open channels may not exist 

 outside and under the tile along which streams may 

 gather and flow. The clay soil, usually last taken out 

 of the ditch, is the best for this purpose. 





Fig. 163. The start and finish of tile draining. 



Various methods of filling the ditch, after the first 

 covering of the tile, are in use, and Fig. 163 repre- 

 sents one, where a plow is drawn by a team working 



