. The book of garden management : Comprising information on laying out and planting Gardening -- Great Britain. about 2 feet, and through the clay subsoil, R S, about 30 inches. A A A are pieces of flat stone, two on each side, supporting the horizontal one: over it is laid a layer of round stones, B, over which the soil is replaced. In ji(]. B is another form of drain, suitable for retentive soils. The construction is the same: two stones or tiles, placed at right angles, rest against the sides, and a third is placed horizontally over them; the soil is replaced, the looser parts be
. The book of garden management : Comprising information on laying out and planting Gardening -- Great Britain. about 2 feet, and through the clay subsoil, R S, about 30 inches. A A A are pieces of flat stone, two on each side, supporting the horizontal one: over it is laid a layer of round stones, B, over which the soil is replaced. In ji(]. B is another form of drain, suitable for retentive soils. The construction is the same: two stones or tiles, placed at right angles, rest against the sides, and a third is placed horizontally over them; the soil is replaced, the looser parts being at the bottom. In fig. C we have the most perfect of all drainarre : a circular drain-pipe, C, is laid at the bottom o'f the trench ; over it are laid, first, the roughest rubble, B, available,—a slate or tile, a, laid across over the rough stones will prevent roots penetrating to the pipes, as well as the earth from falling in through the stones. In fig. D we have the arrangement which Mr. Chitty considers the most convenient, especially for porous soils. A serviceable fiat tile or sole is laid flat in the bottom of the open trench, resting on a sohd and perfectly level bed, gently falling from the higher ground to the outflow; over the tile is laid a semicircular tile, forming an arch extending uninter- ruptedly along the length of the drain; over this is thrown a layer of rough stones and rubble, 6 or 8 inches thick ; over this a tile, to keep out sand, roots ot trees, and other destructive agencies ; and over the whole the surface-soil is agam filled in. We have to add that in/.^. C, our artist has failed tosink the dram mto the substratum R C. The consequence of such an error in practice is explained in para. 9S. 105. In laying down a system of drainage, the chief attention is required to the surface of the it level or undulating? Is it commanded by neighbouring heights? The next consideration is the question of outfall. Let us imagine an area of say ten a
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Keywords: ., bookauthorbeetonsamue, bookpublisherlondonsobeeton, bookyear1862
