jo2 The Four-coulter d Plough. Chap. XIX, 



greater Force to raife up the Poll-wedge, and get 

 loofe. 



The Three added Coulters fhould ftand in the fame 

 Pofture with this already defcribed, in regard to the 

 Inclination of their Points towards the Left : And 

 this is a very great Advantage to them ; for by this 

 means, when the Fin is rais'd up, by turningthe Han- 

 dles towards the Left, their Points do not rife out of 

 the Ground on the right Hand, as they would do 

 without this defcribed Inclination towards the Left; 

 but in regard to their Pointing forwards, I find it 

 bed, that every one of the Three fhould be a little 

 more perpendicular than that next behind it. So the 

 Coulter 4 fbands the neareft to Perpendicular of any 

 of them. By this means there being more Room be- 

 twixt them above than below, they are the more eafily 

 freed from the Turf, whenever the Pieces, being co- 

 vered with a great Quantity of Couch-grafs, or the 

 like, rife up betwixt them : which tho 5 this feldom 

 happens, makes a Neceflity for a Man, or a Boy, to 

 go on the Side with a forked Stick, to pufh out the 

 Turf and Grafs, which might otherwife fill the Spaces 

 betwixt the Coulters, and raife up the Plough out of 

 its Work. 



'Tis to be obferved, that none of thefe Coulters 

 ought to defcend fo low as the Bottom of the Share, 

 except when you plow very mallow : 'Tis always 

 fufricient that they cut through the Turf, let the 

 Plough go never fo deep in the Ground. 



It is neceflary alfo, that when you plow very mal- 

 low, the Fin of the Share be broad enough to cut off 

 the Fourth Piece or Furrow ; elfe that, lying fait, 

 will be apt to raife up the Ground-wrifl, and throw 

 out the Plough: But when you plow deep, the Ground- 

 wrifl wiJ.1 break off this Fourth Furrow, altho' the 

 Fin be not broad enough to reach it. 



Sometimes the Firft or left Furrow is apt to come 

 through betwixt the Firft Coulter and the Sheat, and 



fo 



