Communications On Drainage And Other Agricultural Subjects
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If the natural depres- sion for the river's passage serves to drain by lateral percolation half a mile width of the bor- dering land, a deep artificial drain sunk a foot or two into the sand-bed, and whether open or co- vered, may be expected to do as much. And if so, deep parallel drains a mile apart perhaps might drain the intermediate land. And such drains, even if ten feet deep and covered, would still be made and kept at less cost than the never-ceasing trouble of the numerous shallow and ...open ditches in- Perquimons. But in most other places, as Prin- cess Anne and Norfolk counties, the glutted sand- bed is not usually more than four feet below the surface, and drains sunk into the sand, and if four or even eight of them to the mile of width or cross-distance, would not be very costly, and could scarcely fail of their object.
XI. Draining vertically by bore-holes.
Where the water is closely confined in the sand- bed by the compact texture of the wet overlying earth, and the upward pressure of the confined water is considerable, (because of the quantity, or height, or weight of the water at the higher sources,) a portion of the water may be drawn higher than the top of the sand-bed by the use of the auger.
What to read after Communications On Drainage And Other Agricultural Subjects?
You can find similar books in the "Read Also" column, or choose other free books by Ruffin, Edmund, 1794-1865. [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
If the natural depres- sion for the river's passage serves to drain by lateral percolation half a mile width of the bor- dering land, a deep artificial drain sunk a foot or two into the sand-bed, and whether open or co- vered, may be expected to do as much. And if so, deep parallel drains a mile apart perhaps might drain the intermediate land. And such drains, even if ten feet deep and covered, would still be made and kept at less cost than the never-ceasing trouble of the numerous shallow and ...open ditches in- Perquimons. But in most other places, as Prin- cess Anne and Norfolk counties, the glutted sand- bed is not usually more than four feet below the surface, and drains sunk into the sand, and if four or even eight of them to the mile of width or cross-distance, would not be very costly, and could scarcely fail of their object.
XI. Draining vertically by bore-holes.
Where the water is closely confined in the sand- bed by the compact texture of the wet overlying earth, and the upward pressure of the confined water is considerable, (because of the quantity, or height, or weight of the water at the higher sources,) a portion of the water may be drawn higher than the top of the sand-bed by the use of the auger.
What to read after Communications On Drainage And Other Agricultural Subjects?
You can find similar books in the "Read Also" column, or choose other free books by Ruffin, Edmund, 1794-1865. [from Old Catalog] to read onlineMoreLess
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