. Practical text-book of plant physiology. Plant physiology. DETERMINATION OF AMOUNT OF TRANSPIRATION 207 a direct comparison of the influence of light and darkness may be made. 279. Determination of Amount of Transpiration by a Potometer. If the negative pressure in a plant is equalized the amount of. Fig. 105. Determination of amount of transpiration by Anderson automatic balance. The loss of weight of the plant is-equalized by weights, which are added and recorded automatically. water taken up in any given time, is a fair equivalent of the amount of transpiration during the same period. It
. Practical text-book of plant physiology. Plant physiology. DETERMINATION OF AMOUNT OF TRANSPIRATION 207 a direct comparison of the influence of light and darkness may be made. 279. Determination of Amount of Transpiration by a Potometer. If the negative pressure in a plant is equalized the amount of. Fig. 105. Determination of amount of transpiration by Anderson automatic balance. The loss of weight of the plant is-equalized by weights, which are added and recorded automatically. water taken up in any given time, is a fair equivalent of the amount of transpiration during the same period. It is possible to make much more accurate measurements of the water taken in than that given off, by ordinary methods, and the potometer is perhaps the most useful instrument in studying transpiration. The fol-. 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 MacDougal, Daniel Trembly, 1865-1958. New York [etc. ] Longmans, Green, and Co.
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