. The book of the garden. Gardening. 72 GARDEN WALLS. Fig. 42. u ! [ . ' W ness of from half an inch and upwards. If laid on a solid bed of mortar or ce- ment, it will last for ages. Cast-iron copings may be advantage- ously employed where stone is expensive; and next to Caithness pavement, slate, and glass, they will prove the most durable of all. Such copings should be cast in pieces from 4 to 5 feet in length and half an inch in thickness, having a flange, as shown in fig. 42, cast on both edges of their under surfaces, of a depth equal to the thick- ness of an ordinary brick. Where no proj
. The book of the garden. Gardening. 72 GARDEN WALLS. Fig. 42. u ! [ . ' W ness of from half an inch and upwards. If laid on a solid bed of mortar or ce- ment, it will last for ages. Cast-iron copings may be advantage- ously employed where stone is expensive; and next to Caithness pavement, slate, and glass, they will prove the most durable of all. Such copings should be cast in pieces from 4 to 5 feet in length and half an inch in thickness, having a flange, as shown in fig. 42, cast on both edges of their under surfaces, of a depth equal to the thick- ness of an ordinary brick. Where no projection is desired, they should be cast to the exact thickness of the wall: laid on a bed of mortar, they will keep the wall perfectly dry, as well as retain the upper course of bricks in their proper place. When a projection is to be used, then the last course of bricks should be laid so as to project over both bases of the wall, say from 2 to finches. The plates are then, in such cases, to be cast of a correspond- ing breadth. If the edge of the flanges hang down one-fourth of an inch below the brick, the drip will fall clear of the wall. Cast-iron plates, enamelled with glass on all sides, as exemplified in the recent im- provement, by the same process, in the case of pipes for conveying water, are likely also to be employed, under certain condi- tions, for this purpose. Their form and manner of setting on should be the same as the above. On the utility of copings, the follow- ing reasonable remarks are made by a correspondent in the " Gardeners' Chronicle :"—" The object sought to be attained by planting trees against a wall is to accelerate their growth, so as to enable them to mature their fruit-bearing wood, and afterwards, by the aid of the increased heat and shelter which the wall affords, to stimulate them to produce fruit that shall be of a superior size and excel- lence. It is worthy of remark, however, that it is not always the trees most favour- ab
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
