. An encyclopædia of gardening; comprising the theory and practice of horticulture, floriculture, arboriculture, and landscape-gardening, including all the latest improvements; a general history of gardening in all countries; and a statistical view of its present state, with suggestions for its future progress, in the British Isles. Gardening. Book III. HOT-HOUSE FURNACES AND FLUES. 325 1654. The sides of common jiues are commonly built of bricks placed on edge, and the top covered by tiles, either of the full width of the flue outside measure, or one inch nar- rower, and the angles filled up
. An encyclopædia of gardening; comprising the theory and practice of horticulture, floriculture, arboriculture, and landscape-gardening, including all the latest improvements; a general history of gardening in all countries; and a statistical view of its present state, with suggestions for its future progress, in the British Isles. Gardening. Book III. HOT-HOUSE FURNACES AND FLUES. 325 1654. The sides of common jiues are commonly built of bricks placed on edge, and the top covered by tiles, either of the full width of the flue outside measure, or one inch nar- rower, and the angles filled up with mortar, which Nicol prefers, as neater. Where a stone that will endure fire-heat without cracking is found to be not more expensive than tiles, it is generally reckoned preferable, as offering fewer joints for the escape of the smoke. Such stones are sometimes hollowed on the upper surface, in order to hold water for the benefit of plants in pots, or for steaming the house. 1655. Broad and deep flues, agreeably to the Dutch practice, have been 272 recommended by Stevenson {Caled. Mem.) ; that of making them narrow and deep, agreeably to the practice in Russia, is recommended by Oldacre, gardener to Sir Joseph Banks, and that of using tliin bricks (Jig. 272.) with thick edges, by S. Gowen (Hort. Trans, iii.) In Gowen's flues, the section (Jig. 273. a) shows less materials than any other brick flue, the covers (6) and the side wall bricks (c) being quite thin, the base requisite for building the latter on one another being obtained by the thickness of their edges (d, e), which is equal to that of common bricks. 1656. Can-flues (Jig. 21 ), long since used by the Dutch, imbedded in sand, and for the last fifty years occasionally in Eng- land, are sometimes employed. They consist of earthen pipes, straight (a), or rounded at the ends for returns (b), and joined together by cement, placed on bricks (c). They are rapidly heated, and as soon cooled. None of the heat, however,
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Keywords: ., bookcentury1800, bookpublisherlondonprinte, booksubjectgardening
