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any thing to corre&t the effect of obftructi- ons, which always muft be done more or lefs by the intervention of the beam.

Now, the way to have the fhorteft beam, is to place the point of it as near the furface of the ground as poffible; for this plain reafon, that, whatever the direction of the force be, the lower the beam is fet, they muft the fooner coincide. What the height of the point of the beam“fhould. actually be, it is impoffible to decide in general, be- caufe it muft be different in different cir- cumftances; and every perfon muft deter- mine for himfelf, from the fituation of the furface he has to cultivate. Ihave fpecified the point of the beam, as it is the part of it that can meet with any interruption; for cuftom has very properly formed it farther back into a confiderable curve, to prevent the plough from being incommoded, or choaked up by ftubble, or any loofe thing collected by the inclination of the coulter.

With refpeét to the inclination of the coulter, I have already illuftrated the fupe- riority of this pofition to a perpendicular one; and am now to inquire, whether there is