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In the months of February and March, the ground 

 intended to be improved fliould be trenched in the 

 following manner: Let the principal carriage trenches 

 be at lead three feet deep, and two feet and a half 

 wide, and the Jefler ones, eighteen by fourteen. In 

 digging them, throw the firfl fpit, being turf, regu- 

 larly on one fide, and the bottom fpit, being clay, 

 fliould be laid in heaps on the other fide of the 

 trenches, to take the fun and air. When you begin 

 your work, if your ground be incumbered with 

 thorns, furze, &c. they, when grubbed up and dry, 

 may be ufed as part of the fuel which will be wanted 

 to burn the earth; and in the month of May you 

 iliould begin by taking a few loads of your word 

 clay, and with it make a circular floor or founda- 

 tion, about a foot thick, to prevent burning the fur- 

 face of the earth under the intended heap. In the 

 middle of your floor put three or four large billets 

 of wood almofl: upright, bearing againfl one another, 

 and round throw fmall faggots, roots, and brufli- 

 wood, intermixed with a little cleft wood, as if you 

 were building a pile, to the height of about fix feet; 

 after this begin to bring, in your three-wheel one- 

 horfe carts, the turf or clods round your floor, with 

 which you build a kind of kiln, regularly, as you 

 would a wall, clofe to the heap of wood, circularly 

 all round it, and of the fame height with it. Your 

 yfdW mufl; be about eighteen inches thick. In your 



wall, 



