Blackwood's Edinburgh Magazine, Volume 57, No. 353, March 1845

by Various

To the greater part of the winter operations, as described and explained by Mr Stephens, we adverted in our former notice: there remains one topic, however, to which, from its great national importance, we must still turn for a little.

Among the various improvements which, in the dead season of the year, the farmer may undertake with profit to himself and advantage to his farm, is that of draining. Of this kind of improvement almost every farm in the country is more or less susceptible. But how should it be done, at what depth, and with what material? As to the depth, the young farmer who wishes to do his work well, will neither imitate nor rely too much on the practice of the district he comes from, or in which his own farm may happen to be situated. If so, he will, in Ayrshire—by the advice of the wise-acres in that county—put in his drains only twenty inches, or two feet, in depth; in Berwickshire he will sink them to three feet; and in Sussex he may be carried along with the rising tide to put none in shallower than four feet. He will not trust, we say, wholly to example. He will say to himself rather, what is the object I have in view, and what implements have I to effect it?

In draining he has one leading, one master object, we may call it, to attend to. He has to deepen his soil, that the roots of his crops may descend further—may draw their food from greater depths, and from a larger body of earth. The more completely he can effect this, the better will his work be done.

How deep will his crops send down their roots? In favourable circumstances his wheat and clover, and even his turnips, will descend to a depth of three feet. His operations, then, would be in some degree perfect, if he could so open, and drain, and doctor his land as to enable and induce the roots of his crops to go down so far as this.

But they will never, or rarely at least, descend lower than the level of the water in the bottom of his drains. He cannot, therefore, hope to make his soil available for the growth of his crops to a greater depth than that to which his drains descend. Three feet then, he will say, appears to be a reasonable depth for a perfect drain.

Again, drained land must be opened beneath by the subsoil plough, or by the fork, if the rains, and roots, and air, are to descend, and the full benefits are to be derived from the drains. With our existing implements—especially with the fork—the soil may be stirred to a depth of twenty-six inches. The top of the drain, therefore, should be at least this depth under the surface; and this, again, brings the whole depth of a perfect drain to within a few inches of three feet as before.

Then as to the material, it seems advisable to use either stones or tiles, according as the one or the other is the cheaper, provided always that the stones are properly broken, and carefully put in. The tide seems now to be running in favour of smaller tiles than have hitherto been generally used in Scotland, and even of pipe-tiles of a very small diameter. Our friend Mr Smith of Deanston has taken out a patent for a pipe-tile, with projecting fingers at the ends, which dovetail into each other, so as to unite the tiles together, and at the same time to keep them in their places. Should these pipes be found generally efficient, the cost of draining will be considerably diminished, while the small space they occupy will afford greater facilities for deepening the soil.

But the economical considerations connected with draining, are as important as the practical methods to be adopted, both to the cultivator of the soil and to the country at large. We shall advert only to one of these.

In what light ought the expenditure of money in draining to be regarded by the practical man?

He ought to consider it only as a mercantile speculation, by which he may or may not make a profit, according to the degree of prudence with which it is undertaken. He has the usufruct of his farm for a certain number of years, with liberty to crop it in a certain way. By this he hopes to make a certain sum of money. But it is capable of improvement by draining, and he has liberty to drain if he likes. "Well," he says to himself, "I make a certain sum by farming my land as it is; I have here fifty pounds of ready money, could I make more profit if I were to lay this money out in draining it?—would it be a good speculation?" He calculates the cost of draining and the probable return of profit, and the result is apparently that he can make more profit by this use of his money than by any other way in which he could employ it. This being the result, the prudent man embarks in this safe speculation. He does not bury his money in his land; he does not give it away to the land to the loss of his family; he only lends it for a season, and for the benefit of his family. He has made his calculations badly, and has only his own arithmetic to blame, if he does not get all his capital back from the land, with a handsome profit in addition, some years before his lease has expired.