... 4. Direction of the minor drains 'down the steep,' and that of the mains along the bottom of the chief hollow — tributary mains being provided for the lesser hollows. The reason assigned for the minor drains following the line of steepest descent,... Annual Report - Էջ 406Ohio State Board of Agriculture - 1865Ամբողջությամբ դիտվող - Այս գրքի մասին
| John Hancock Klippart - 1861 - 486 էջ
...opportunities for the water rising from below and falling on the surface, to pass freely and completely off.' "4. Direction of the minor drains 'down the steep,'...generally lies in sheets, at an angle to the surface.' "5. A> to material — Stones preferred to tiles and pipes." From 1833 to 1854, several systems of drainage... | |
| Ohio State Board of Agriculture - 1865 - 766 էջ
...opportunities for the water rising from below and falling on the surface, to pass freely and completely off.' " 4. Direction of the minor drains ' down the steep,'...distance between as well as the depth of the drains. 413 chased tile machines, manufactured tile, and established depots for the sale of them at low rates,... | |
| John Hancock Klippart - 1867 - 478 էջ
...opportunities for the water rising from below and falling on the surface, to pass freely and completely off.' "4. Direction of the minor drains 'down the steep,'...lies in sheets, at an angle to the surface.' " 5. At to material — .Stones preferred to tiles and pipes." From 1833 to 1854, several systems of drainage... | |
| John Scott (land valuer.) - 1883 - 204 էջ
...provided for the lesser hollows. " The reason assigned for the minor drains following the line of deepest descent was, that the stratification generally lies...material. — Stones preferred to tiles and pipes.' ' 3. — THE DEEP-DRAINAGE SYSTEM. Mr. Josiah Parkes was the early advocate of deep drainage. As compared... | |
| John Hancock Klippart - 1888 - 514 էջ
...opportunities for the water rising from, below and falling on the surface, to pass freely and completely off.' "4. Direction of the minor drains 'down the steep,'...distance between as well as the depth of the drains. The merit of each of these systems will be discussed in the practical portion of this treatise. .Drainage... | |
| The Farmer's Magazine - 1836 - 570 էջ
...to be erroneous. Drains drawn across asleep, cut the strata or layersof subsoil transversely, and as the stratification generally lies in sheets at an angle to the surface, it will be seen, on reference to fig. 7, that the water passing in or between the strata, immediately... | |
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