SUCCESS IN MARKET GARDENING 



laid, actually more costly. And still more objec- 

 tionable is the fact that, although in some instances 

 they may last a long time and prove quite service- 

 able, they are always liable to be reached by 

 surface water, which, by carrying silt into them, 

 stops them up, and of course renders them 

 useless. 



The general principles to be observed in laying 

 a stone drain are quite well understood. But a 

 mistake is often made by lack of diligence in 

 securing proper covering, and especially by resort- 

 ing to the use of turf, which is often dumped in 

 upon the stones, and which, when decayed, forms 

 the most effective possible material for obstruct- 

 ing the drain. 



There are many ways of constructing cheap 

 drains of brush, slabs, poles, etc., but they are 

 sure to clog up and create trouble sooner or later; 

 and, as we have said before, the round tile when 

 well laid, generally speaking, forms the cheapest 

 and most satisfactory means of draining. 



In planning for the draining of a field, the 

 chiefly important item is to take notice of the 

 lowest point; at which the outlet must be formed. 

 If a natural watercourse can be found near by, 



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