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Of the Aion of a Plough

in general.

Y N ploughing three things are per-

formed. A ſlice of earth is cut off from the general maßs. This flice 1s removed ſome inches to one fide. It 1s ſo turned, that ic may expoſe a new ſurface to the air, and that what was formerly uppermoſt may now be buri- eds Totthe- pérſormance of- thelé things, the conſtruction of the plough muſt be adapted, and the work muſt be performed with as little labour to the cattle, and to the ploughman, as poſ- ſible; and the ploughman muſt have it in his power to vary at pleaſure the depth, wideth, and poſition of the fur-

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