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filled up as high as the top of the fpade- 

 work, with brufh-wood at the bottom, 

 and a piece of wood, as big as a man's 

 kg, on the top ; a little ftraw is fliaken 

 over that, and the remainder of the draia 

 is filled up with earth. The greater the 

 proportion of wood, and the harder the 

 earth is prefied in, the longer will be the 

 duration of the work. The wood muft 

 be fuch as runs pretty free in its bran- 

 ches. Elm, alder, and fallows are as 

 good as any. 



It is rather difficult to make an exad 

 eliimate of the expence, becaufe the price 

 varies, in the county of EfTex itfelf, from 

 one penny to three pence per pole, in the 

 workmanfliip onlyj and fome land re- 

 quires the drains to be nearer together 

 than others 5 but fuppoiing the drains to 

 be a pole in width from each other, 

 which is the common diflance, the fol- 

 lowing 



