. The book of the garden. Gardening. THE AQUARIUM. 415 them within the reservoir. This sup- ply would be sufficient to make up for the loss sustained by evaporation and Fig. leakage, as well as to secure constant change of the water, to prevent it from becoming stagnant and unwholesome, the highest point of level being provided with a waste or overflow pipe. In this centre cistern, being the highest part of the house, the taller species of aquatics are to be grown. We have thought it unne- cessary to show the hot-water pipes in the centre tank a, or passage round it, as they are shown so


. The book of the garden. Gardening. THE AQUARIUM. 415 them within the reservoir. This sup- ply would be sufficient to make up for the loss sustained by evaporation and Fig. leakage, as well as to secure constant change of the water, to prevent it from becoming stagnant and unwholesome, the highest point of level being provided with a waste or overflow pipe. In this centre cistern, being the highest part of the house, the taller species of aquatics are to be grown. We have thought it unne- cessary to show the hot-water pipes in the centre tank a, or passage round it, as they are shown so clearly in the section, fig. 568. We may remark that all these pipes, being laid in a circular direction, should be 21-inch leaden pipes, by which means few j oints will be required. The side tanks b b are to be appropriated to the cul- tivation of the lower-growing and floating kinds. These latter tanks should be divided by partitions, so that various depths of water can be secured to suit the different habits of the plants, and one division should be set apart for bog plants, or such as merely require a damp surface, as the genera Sarracenia, Drosera, &c. The floors and sides of the passages should be laid with polished Bangor slate, Caith- ness pavement, Minton's patent tiles, or covered with patent Antonica, in imitation of polished Aberdeen granite, or any of the various coloured mar- bles, which can all be imitated to the great- est perfection by this excellentmaterial,and at littlemore cost than that of Roman cement. The tops and inner sides of the tanks, as far as they are not covered with water, may be covered with the same material. In regard to heat- ing, hot-water pipes should be laid in the bottom of each tank, as shown at c c c c c c in ground plan, and atmospheric heat ob- tained by the same means, the pipes being laid under the foot- paths in chambers dis- connected from the side walls, to prevent the abstraction of heat; in fact, they should be placed in w


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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18