x6 Of the Coulter,

forward below. Some principles are, in this caſe, perfeâly conformable to cx- perience. In the firſt place, the Încli. nation of the coulter makes it cut the earth more eaſily; for, it is well known, that, in all operations wich eutting in- ſtruments, the work is more eaflily per- formed when the edge of the inſtrument is placed oblique to the direQion of its motion. I cannot give a better in- tance, than the operation of ſhaving, where the refiſtances in the different

poſitions of the edge of the raſor are

moſt eaſily diſtinguiſhed. Some think,.

that a lof is ſuſtained by the point of

the coulter cutting the furrow o much below, before it is cut above. Buc it may be ealily ſhown to ſuch perſons, that no loſs is ſuſtained; but, on the contrary,

A

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YN!

N)