rds

Of the Coulter. 37 backwards to the hindermoſt ſide of the ſheath, ſhould be ſuch, that, when a ruler is laid to tlie ſide in that place, it will projet 2+ inches to the left of the fore end ofthe beam. A B in this figure is the plane óf the land ſide of the plough, which, by this way of ta- pering, paſtes very near the middle of the thickeſt part of the beam. By this method, the coulter-mortiſe is brought over to the land ſide, half of the taper given to the beam. But as this is not fuflicient for bringing the coulter into the poſition formerly recommended, LI give the coulter a knee, or ſet of 2 inch- es, as repreſented in fig. 5, Thus, the coulter may be ſet ſo as to make it cut in the beſt manner, and yet be in the middle of the beam, The ſheath is alſo

nortiſed