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it grows, as would defend it from being affected by the water almost as well as if it were a rock. It is likewise an advantage attending this plant, that it grows upon a firm bottom, and chiefly delights in runningwaten
If the stratum of soft earth is not so deep as reach to the surface of the water, and lies upon a stratum of rock or hard gravel, there will be no occasion for throwing in stones of any kind. But, as it is difficult to unite the vegetable mold to any ot these strata, there will always be some danger of its separat.ng from them in violent inundations; and if the water once get an eniry, it will not fail to grow larger and larger by every future inundation. To prevent this inconvenience, it will be necessary, after you have sloped the earth away till you reach the gravel or rock, to cover the place where the edge of the earth joins the inferior stratum, with a good many small stones, if they can be found ; sowing between them the seeds of any kind of plants that you think are most likely to thrive, which have strong matted roots, with as small and flexible tops as possible.
You will easily observe, that, from the impossibility of ever making earth adhere firmly to stone of any kind, it must always be an improper practice to face the banks of a river to a certain height with stone, which is coped at top with earth.
By these precautions, or others similar to them, it is not to be doubted, but that almost all the banks that are hurt by these agci-» dents might be effectually secured.
~ § XXIX/
Of Fencing the Banks of Rivers, so as to con* Jine the Water within proper Bounds, and prevent the Damage that might be done by its overflowing the Fields upon its Banks, in the Time oj Inundations,
Another mischief occasioned by the swell* ing of rivers, not less considerable than the for going, is produced by the water over* flowing the rich flat ground that is frequent^ ly met with on the sides of rivers, which sometimes prevents them from being got1 laboured at the proper season, sometimes sweeps off at once the whole crop, and some>ri times destrovs it by covering the whole for-?] face with stones and gravel, to the unspeak-i able detriment of the possessors of such