. Elementary plant physiology. Plant physiology. 70 Elementary Plant Physiology. brane. Observe the consequences, and note behavior of column of mercury for a day or two. 64. Lifting power of a transpiring branch—Fit a rubber or cork stopper to the top of a burette, or graduated tube. Secure a woody branch of any con- venient species with active leaves. If possible, cut the branch from the plant by bending under water the portion to be severed, then using a sharp knife. If this is impracticable, cut the branch much too long, and bring it into the labora- tory, and cut to proper length, as show
. Elementary plant physiology. Plant physiology. 70 Elementary Plant Physiology. brane. Observe the consequences, and note behavior of column of mercury for a day or two. 64. Lifting power of a transpiring branch—Fit a rubber or cork stopper to the top of a burette, or graduated tube. Secure a woody branch of any con- venient species with active leaves. If possible, cut the branch from the plant by bending under water the portion to be severed, then using a sharp knife. If this is impracticable, cut the branch much too long, and bring it into the labora- tory, and cut to proper length, as shown in Fig. 50. Make a hole in the stopper to admit the , branch. Seal the fitting externally with gelatine which has soaked in water for an hour or two. _, „ . Invert the prepara- Fig. 45.—Preparation to demonstrate lifting power of . ^ a leafy branch. After Detmcr. tion, and fill the. 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, London [etc. ] Longmans, Green, and Co.
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