. Mon jardin, son plan et la culture en collaboration avec une description générale de sa géologie, de la botanique, et l'histoire naturelle. Le jardinage. FRAMES ET MAISONS DE VERRE. 73. Le côté sud est principalement fait de planches recouvertes de goudron comme- phalted ont estimé, ce qui est un mauvais conducteur de chaleur et d'une grande protection contre rost. En conformité avec plus d'ex- Expérience de la valeur de la lumière, les fougères J'ai placé certaines bouteilles en verre sur le côté sud ; mais les arbres ont été plantés à l'avant, de sorte qu'en été, les feuilles ne pas brûler les rayons du soleil-. En hiver, par contre, lorsque le f.u. 86.-porte des feuilles h Penary.

• Contributeur: The Book Worm / Alamy Banque D'Images
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. My garden, its plan and culture together with a general description of its geology, botany, and natural history. Gardening. FRAMES AND GLASS-HOUSES. 73. The southern side is chiefly made of boards covered with tarred as- phalted felt, which is a bad conductor of heat and a great protection against rost. In conformity with more ex- tended experience of the value of light to ferns I have placed some glass on the southern side; but trees have been planted in front, so that in summer the leaves keep off the rays of the burn- ing sun. In winter, however, when the f.u. 86.-Door of Penary. leaves have dropped, abundance of light penetrates into the house through their naked branches, to the great benefit of the plants. A stream of water runs through the fernery, which is dilated, at one place, into a pond, and though the house is a mere roofing of glass supported on posts, it is universally admired as a very beautiful place: Mr. Robertson has Atery faithfully rendered it in his drawing (plate 19). The view of it is taken facing the west—the instant the house is entered ; and the little bird in it is one of the poor frozen birds caught during the snow and ice of winter, which luxuriated and cleared the house of insects, but which flew away to its native haunts as soon as it could find a hole through which it could escape. In this house I desired to grow ferns from all parts of the world, that they may be seen at a glance ; and thus I required a house varying rn temperature from the tropical to the temperate climates. It requires much thought to obtain this result in any given house, especially where currents of air and draughts kre objectionable. The result has been perfectly obtained on the first design, by raising the floor at the warmer end, by placing more rows of hot-water pipes in the part of the house between the door and the end desired to be warmer, and by preventing the currents of hot air traversing the length of the roof by the inter- position of screens of

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