. Elementary lessons in the physics of agriculture . Fi(/. 7. Showing: the drainage system on an 80 acre farm in Northern Illinois after C. G. Elliot, C E. Double lines repiesent mains; singles lines, laterals, and the numbers express the length ol dr-einf and the size of tile used. It will be seen that the lateral drains are, where nearest, 150 feet apart; and it should be understood that this sys- tem is not intended to provide perfect drainage but rather, as good as would pay a fair interest on the investment under the returns of general farming. This figure may also serve to show how the s
. Elementary lessons in the physics of agriculture . Fi(/. 7. Showing: the drainage system on an 80 acre farm in Northern Illinois after C. G. Elliot, C E. Double lines repiesent mains; singles lines, laterals, and the numbers express the length ol dr-einf and the size of tile used. It will be seen that the lateral drains are, where nearest, 150 feet apart; and it should be understood that this sys- tem is not intended to provide perfect drainage but rather, as good as would pay a fair interest on the investment under the returns of general farming. This figure may also serve to show how the sizes of tile are selected and placed with reference to the amount of work they are called upon to do.
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Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1800, bookcontributorthe, bookdecade1890, bookyear1891
