. Elements of practical agriculture; comprehending the cultivation of plants, the husbandry of the domestic animals, and the economy of the farm. DRAINING. 193. the apertures open, as the flow of the water will suffice to main- tain for itself a passage. Sometimes, in place of an auger- hole, wells are sunk at intervals along the side of the drain, and filled with stones in the manner shown in the figure. In all cases of draining where the water to be reached is at some depth, the drains should be made of sufficient dimensions. They should not be less than 4 feet deep, even when the pervious s
. Elements of practical agriculture; comprehending the cultivation of plants, the husbandry of the domestic animals, and the economy of the farm. DRAINING. 193. the apertures open, as the flow of the water will suffice to main- tain for itself a passage. Sometimes, in place of an auger- hole, wells are sunk at intervals along the side of the drain, and filled with stones in the manner shown in the figure. In all cases of draining where the water to be reached is at some depth, the drains should be made of sufficient dimensions. They should not be less than 4 feet deep, even when the pervious strata lie at less depth; and the reason is, that they may be more permanent, and better defended from injury from mud and sand carried down by surface water. It is not ne- cessary that they be made deeper than 4 feet when that is found to be sufficient; but they must be carried, if necessary, to the depth of 6 feet, or even sometimes of 7 feet, though the expense and difficulty of executing the work increase, in a great proportion, as the dimensions of the drain increase. The importance, in this species of draining, of proceeding upon principles in laying out the lines of drains, instead of acting at random, as so many do, cannot be too strongly im- pressed upon the attention of the drainer. Every drain, how- ever rudely devised, and imperfectly executed, may do some good. But one drain well laid out, and of the required dimen- sions, may perform a purpose which no multiplication of minor and insufficient drains can effect. These may lessen the effects of wetness, but the other is designed to remove the causes of it; and the more perfect practice will usually be found in the end to be the most economical as well as the most efficient. The drains of the larger class described, it will be seen, are intended for the removal of water which is contained in reser- voirs and channels below the surface. N. Please note that these images are extracted from scanned page images that may ha
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