. The book of the garden. Gardening. haps the deep violet colour of the slates would be the best possible for garden walls, which" he has " deduced from some recent observations on the rays of light and heat. These slate walls might be hollow—viz., filled with rounded peb- bles, and no- ly 1 * thing else, and thus be heated by steam occa- sionally, or be entirely hollow, with a double rebate, and per- forated upright- ly, and become long smoke flues of great depth and thinness, as in fig. 95, in which d is the side view of an upright, and e a cross section or ; Such walls w
. The book of the garden. Gardening. haps the deep violet colour of the slates would be the best possible for garden walls, which" he has " deduced from some recent observations on the rays of light and heat. These slate walls might be hollow—viz., filled with rounded peb- bles, and no- ly 1 * thing else, and thus be heated by steam occa- sionally, or be entirely hollow, with a double rebate, and per- forated upright- ly, and become long smoke flues of great depth and thinness, as in fig. 95, in which d is the side view of an upright, and e a cross section or ; Such walls would be both economical and useful, and certainly far more elegant than those in common use. We differ, however, in opinion from Mr Mallet, in regarding them as capable of being heated more especially by flues, as the slates would not stand the heat near the fur- naces; and as for jointing them with tar, as he proposes, to prevent the escape of smoke or steam, we consider it the very worst material that could be employed for that purpose. The same intelligent architect has also suggested, in the work last quoted, a brick wall supported with iron uprights, and the spaces filled in with reba- ted bricks, as shown in annex- ed fig. 96. "A 4-inch wall built in this way, with posts at every 4 feet," Mr Mallet thinks, "would be as strong and stiff as an or- dinary 14-inch wall, and, excluding the original expense of brickmaking and foundry apparatus, would not cost above one-third of the expense. The bottom Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original McIntosh, Charles, 1794-1864. Edinburgh and London, W. Blackwood
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
