. An encyclopædia of agriculture [electronic resource] : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and the cultivation and economy of the animal and vegetable productions of agriculture, including all the latest improvements, a general history of agriculture in all countries, and a statistical view of its present state, with suggestions for its future progress in the British Isles. Agriculture. Boou III. DRAINING MIXED SOILS. roi. lower of these porous strata, the water disai>pearcd in the upper one : and hence
. An encyclopædia of agriculture [electronic resource] : comprising the theory and practice of the valuation, transfer, laying out, improvement, and management of landed property, and the cultivation and economy of the animal and vegetable productions of agriculture, including all the latest improvements, a general history of agriculture in all countries, and a statistical view of its present state, with suggestions for its future progress in the British Isles. Agriculture. Boou III. DRAINING MIXED SOILS. roi. lower of these porous strata, the water disai>pearcd in the upper one : and hence generally the expediency of not stopping at the first, but of working down till the main stratum was reached. Several instances occurred where the strata lay too deep to he reached by a drain ; in wliich cases it was deemed necessary to sink wells or pits at certain distances along the line of the drain, from ten to eighteen feet deep, or more, in order to reach the open strata, so that the water, rising through the wells to the bottom of the drains, might lie conveyed away without reaching the surface. It was never thought suthcient to have reached the first seam containing water, unless it were at the depth of four feet or more, and evidently appeared to be that containing the main body of water which occasioned the wetness of the ; (trans. Highl. Soc.) 4237. The first operation m the process of draining " was to ascertain the depth and nature of the strata in which the water was contained, and the overHowing of which, where no outlet existed, produced, as was before remarked, either springs or bursts of water, or a general oozing. Along the line of these springs, or in the upper part of the wet ground, pits were sunk in various places. The place of each being marked out, a man was sent to dig each pit, breaking the ground nearly in the direction of the intended drain, six feet long and three feet wide, which is sufficient space to allow a man, or sometime
Size: 2404px × 1039px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookpublisherlondonprin, booksubjectagriculture
