 | Dennis Hart Mahan - 1846 - 380 páginas
...means will be amply sufficient to protect the side slopes from injury when they are not exposed to any other causes of deterioration than the wash of...are sometimes formed with horizontal offsets, termed benches, which are made a few feet wide and have a ditch on the inner side to receive the surface-water... | |
 | Dennis Hart Mahan - 1846 - 378 páginas
...means will be amply sufficient to protect the side slopes from injury when they are not exposed to any other causes of deterioration than the wash of...are sometimes formed with horizontal offsets, termed benches, which are made a few feet wide and have a ditch on the inner side to receive the surface-water... | |
 | Dennis Hart Mahan - 1852 - 418 páginas
...means will be amply sullicicnt to protect the side slopes from injury when th«y are not exposed 10 my other causes of deterioration than the wash of the...are sometimes formed with horizontal offsets, termed benches, which are made a few feet wide and have a ditch on the inner side to receive the surface-water... | |
 | Henry Law - 1855 - 180 páginas
...means will be amply sufficient to protect the side slopes from injury when they are not exposed to any other causes of deterioration than the wash of...are sometimes formed with horizontal offsets, termed benches, which are made a few feet wide and have a ditch on the inner side to receive the surface-water... | |
 | Dennis Hart Mahan - 1855 - 446 páginas
...means will be amply sufficient to protect the side slopes from injury when they are not exposed to any other causes of deterioration than the wash of...are sometimes formed with horizontal offsets, termed benches, which are made a few feet wide and have a ditch on the inner side to receive the surface-water... | |
 | Ohio State Board of Agriculture - 1870 - 740 páginas
...means will be amply sufficient to protect the side slopes from injury when they are not exposed to any other causes of deterioration than the wash of the rain, and the action of the frost on the ordinary moisture retained by the soil. The side slopes form usually an unbroken surface... | |
 | Dennis Hart Mahan - 1867 - 428 páginas
...means will be amply sufficient to protect the side slopes from injury when they are not exposed u «i) other causes of deterioration than the wash of the...are sometimes formed with horizontal offsets, termed benches, which are made a few feet wide and have a ditch on the inner side to receive the surface-water... | |
 | Ohio State Board of Agriculture - 1870 - 736 páginas
...means will be amply sufficient to protect the side slopes from injury when they are not exposed to any other causes of deterioration than the wash of the rain, and the action of the frost on the ordinary moisture retained by the soil. The side slopes form usually an unbroken surface... | |
 | Dennis Hart Mahan - 1871 - 468 páginas
...injury when they are not exposed u in) other causes of deterioration than the wash of the rain, and .he action of frost on the ordinary moisture retained...are sometimes formed with horizontal offsets, termed benches, which are made a few feet wide and have a ditch on the inner side to receive the surface-water... | |
 | Dennis Hart Mahan - 1871 - 456 páginas
...means will be amply sufficient to protect the side slopes from injury when they are not exposed tc The side slopes form usually an unbroken surface from...are sometimes formed with horizontal offsets, termed benches, which are made a few feet wide and have a ditch on the inner side to receive the surface-water... | |
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These means will be amply sufficient to protect the side slopes from injury when they are not exposed to any other causes of deterioration than the wash of the rain, and the action of frost on the ordinary moisture retained by the soil. The side slopes... 
