[ 26 J 



been drained in this manner, at an im- 

 menfe expence, ftones being very fcarce 

 near him. Tiic expence of thefe drains, 

 in workmanfhip, is from fix pence to fe- 

 ven pence a pole ; in EiTex it fcarce bears 

 half that price. I Ihould prefer either of 

 thefe methods according to the eafe with 

 which the materials are obtained. 



There is ftill another fort of covered 

 draining, which may be adopted in a very 

 flirt, tenacious foil. It is called turf- 

 drainingj and, befides that it is the cheap- 

 eft of all, I believe it to be as lafting as 

 any, if the land be fufficiently cohelive : 

 But upon a loofe, crumbling foil it is im- 

 practicable. This draining is of two 

 kinds ; in the one, the inverted turf is 

 put upon a fhoulder, as defcribed N°. 2, 

 leaving a hollow part under it, and the 

 remainder of the drain is filled up merely 

 with the earth that came out of it. 



The 



