DISTATs^CE BETWEEN THE DRAINS. 



loy 



ture which the land itself receives from rain, it 

 is a comparatively easy matter, and the drains may 

 he laid with greater uniformity, while in either of 

 the preceding cases the same rule which we now 

 pursue would have entirely defeated the object. 

 Generally it is more economical for the fruit-grower 

 who proposes to drain his land to engage the ser- 

 vices of a competent engineer, as drainage, unlike 

 manuring or cultivation, is a permanent improve- 

 ment. The system, as a whole, must be formed 

 before the work is commenced as far as relates to the 

 place of outlet and the position of the main drain 

 and its stronger branches, else it would be difficult to 

 decide on the size of the pipe which was required. 



3. The distance at which the drains should he from 

 one another is an inijyoi'tant consideration. This also 

 must be decided from a knowledge of the cause of 

 the superfluous moisture. This is well illustrated 

 in a letter from Mr. Denton by the same author. 



" The wetness of land, which for distinction's sake 

 I will call the water of pressure, like the water of 



springs, to which it is nearly allied, can be effectually 

 10 



