TKENcnmo. 23 



Tlic object to be attdncd is, so tlioronglilj to mix, 

 as well as pulverize, the two soils thrown togetlier, as 

 to dilute the good earth with the inert ; but it w^ill be 

 perceived, that they have only interchanged positions, 

 without commingling. 



The layers of soil and manure declining at an angle 

 of about forty-five degrees, and which now exhibit 

 their edges at the surface, may be thoroughly inter- 

 mingled by one or two deep plowings. It will at 

 once be seen, that a soil deepened in this manner will 

 demand much more manure than when cultivated to 

 tlie ordinary depth. 



When the trenching of a plot of ground is finished, 

 a ditch will remain, which must be filled with the 

 earth first thrown out at the other extremity of the 

 field. 



The cost of trenching an acre of ground will de- 

 pend greatly upon the character of the soil, and the 

 depth it is worked. 



The trenching of my own ground may not affbrd a 

 fair criterion, but it will furnish a basis by which calcu- 

 lations may approximately be made of the exj^enso. 



The soil was a sandy loam, deepened to an average 

 of nearly tln-ee feet, with the surface eai*th of tlie adja- 

 cent streets, and tliough very free in its composition, 

 had been very much hardened by the passage of the 

 carts in filling. 



LABOR ON ONE ACRE — TRENCHED THIRTY INCHES DEEP. 



Plowing, one day $3 00 



Scvcuty-two days' labor, at )?1 72 00 



One day carting soil from the first trench to the last one, 2 men 3 00 

 Removing stones thrown out 1 00 



$79 00 



