ON THESPLOUCH. A

meafure out of their proper direction, and thofe moft that are at the greateft diftance fromthecenter; confequently, an obftruction that moves the fhare only a very little up

-or down, will make the point of the beam

defcribe a large portion of a circle. But the longer beam, by defcribing a larger portion than the fhorter one, will be fooner refifted, by the dire€tion of the force, and, therefore, fooner brought back to its proper pofition; fo that the fame obftru€tion will lefs difturb the motion of the plough with the longer beam, than the one with the fhorter.

But, unlefs the interruptions are nume- rous and obftinate, this circumftance can- not be of much moment; betaufe the great- eft difference in length cannot be very con- fiderable.

Here alfo it appears, that, by means of the beam, the plough acquires a more fteady and equal motion than if it were pulled by a line running dire€tly to the center of- fiftence. For, in the latter cafe, the direc- tion of the force could not have contributed

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