. Practical physiology of plants. Plant physiology; 1894. CH. Vl] TEMPERATURE. 147 will greatly increase in vertical height,—the flame is extinguished so that the fall in rate of growth may be. Fig. 28. Exp. 186. recorded. Fig. 28 gives a copy of a tracing taken as here described: the numbers give the temperatures (C) to which the plant was exposed. (187) Ught Fit up a Narcissus as above described in the dark room, and after 2 or 3 hrs. take down the shutter so that the plant is illuminated; no sunshine must be admitted, . otherwise the' temperatxire of the room will be affected. The period of
. Practical physiology of plants. Plant physiology; 1894. CH. Vl] TEMPERATURE. 147 will greatly increase in vertical height,—the flame is extinguished so that the fall in rate of growth may be. Fig. 28. Exp. 186. recorded. Fig. 28 gives a copy of a tracing taken as here described: the numbers give the temperatures (C) to which the plant was exposed. (187) Ught Fit up a Narcissus as above described in the dark room, and after 2 or 3 hrs. take down the shutter so that the plant is illuminated; no sunshine must be admitted, . otherwise the' temperatxire of the room will be affected. The period of illumination should last 3 hours, when the shutters should be once more closed. In this experiment it is important to take readings of the wet and dry bulb thermometers occasionally, both during the dark and the light period. 10—2. 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 Darwin, Francis, Sir, 1848-1925; Acton, Edward Hamilton, d. 1895; Lindley, Nathaniel Lindley, Baron, 1828-1921. sgn. Cambridge, University Press
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplantph, bookyear1894
