Farm Drainage The Principles Processes And Effects Of Draining
Chapter 7
DIRECTION, DISTANCE AND DEPTH OF DRAINS.
DIRECTION OF DRAINS.--Whence comes the Water?--Inclination of Strata.--Drains across the Slope let Water out as well as Receive it.--Defence against Water from Higher Land.--Open Ditches.--Headers.--Silt-basins.
DISTANCE OF DRAINS.--Depends on Soil, Depth, Climate, Prices, System.--Conclusions as to Distance.
DEPTH OF DRAINS.--Greatly Increases Cost.--Shallow Drains first tried in England.--10,000 Miles of Shallow Drains laid in Scotland by way of Education.--Drains must be below Subsoil plow, and Frost.--Effect of Frost on Tiles and Aqueducts.