. Bulletin of the Department of Agriculture. Agriculture; Agriculture. mter,Bec>rm3^"'^^ Drain 5 deet. ,de;. Fig. 5.—Section of water-logged tract in which attempt at drainage was unsuccessful owing to insuflacient depth of drain. The trench should have been cut entirely through the water-bearing sand and the tile laid on the underlying clay. however, must often be considered in connection with that of required depth. For instance, referring again to figure 4, b, it will readily be seen that a drain located at the change of slope will be fully as effective and more economica
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. mter,Bec>rm3^"'^^ Drain 5 deet. ,de;. Fig. 5.—Section of water-logged tract in which attempt at drainage was unsuccessful owing to insuflacient depth of drain. The trench should have been cut entirely through the water-bearing sand and the tile laid on the underlying clay. however, must often be considered in connection with that of required depth. For instance, referring again to figure 4, b, it will readily be seen that a drain located at the change of slope will be fully as effective and more economical than one located on the top of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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