The Mirror of Literature, Amusement, and Instruction - Volume 12, No. 348, December 27, 1828 by Various
page 27 of 57 (47%)
page 27 of 57 (47%)
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when the sap of the tree is most luxuriant, it produces small white
drops, of a sweet glutinous matter, like Calabrian manna, which are collected by the peasants early in the morning before the sun dissipates them.--_Med. Bot_. _Electricity on Plants_. It is very easy to kill plants by means of electricity. A very small shock, according to Cavallo, sent through the stem of a balsam, is sufficient to destroy it. A few minutes after the passage of the shock, the plant droops, the leaves and branches become flaccid, and its life ceases. A small Leyden phial, containing six or eight square inches of coated surface, is generally sufficient for this purpose, which may even be effected by means of strong sparks from the prime conductor of a large electrical machine. The charge by which these destructive effects are produced, is probably too inconsiderable to burst the vessels of the plant, or to occasion any material derangement of its organization; and, accordingly, it is not found, on minute examination of a plant thus killed by electricity, that either the internal vessels or any other parts have sustained perceptible injury. * * * * * STANGING. [Illustration: Stanging.] |
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