Transpiration, experiments, showing the quantities imbibed and perspired by Plants and Trees. Experiment XII Apple tree from which 25mm diameter branch has been removed (right) and glass tube fitted over wound. Water poured down tube and absorption measured: quickest when all bubbles sucked out of stem. When 2 pints camphorated spirits of wine put in tube it was absorbed in 3 hours, but one half of tree killed.From Stephen Hales' Vegetable Staticks, London, 1727