80 



RENNIE S AGRICULTURE- 



Distance 

 Between 

 Drains. 



and the quality of the subsoil through which the 

 drains run. 



In a tenacious clay soil, forty feet apart would be 

 considered an average distance between laterals. In 

 a porous soil these may be from sixty to seventy-five 

 feet apart. 



41. DRAINING SPADE. 



Construction 

 of Drain. 



Connecting to 

 Subsoil Plow. 



In commencing to drain, open up the land with 

 an ordinary plow by passing three or four times in 

 the same track. The subsoil can then be loosened 

 with an ordinary subsoil plow See III. g. 



In hitching to the subsoil plow, fasten a chain 

 six or seven feet long to the point of beam and move 

 the chain back on the beam as the drain is deepened. 



42. 



•Rl' \I MKR. 



Putting the 

 Earth Out of 

 the Drain. 



The evener or double tree will require to be six or 

 seven feet long so that the horses will travel outside 

 of the earth thrown out, one on each side. 



The earth thus loosened will require to be thrown 

 out after every round made bv the subsoiler. This 

 is done with narrow shovels until the drain is the 

 required depth. 



The bottom of the drain should be dug wi h a 



