. Bulletin. Forests and forestry -- United States. 16 A PRIMER OF FORESTRY. TRANSPIRATION. The leaves give out not only the oxygen derived from the decomposition of carbonic acid gas taken from the air and carbonic acid gas produced inbreath- ing, but also great quan- tities of water vapor. The amount of water taken up bj^ the roots is very much larger than is required to be com- bined with carbon and the earthy constituents in the leaves. In order that fresh supplies of. Fig. 14.—By comparing this diagram -with Pis. VIl-IX and tig. 16, the place of eacL cut in tbe tree ^vill be made P
. Bulletin. Forests and forestry -- United States. 16 A PRIMER OF FORESTRY. TRANSPIRATION. The leaves give out not only the oxygen derived from the decomposition of carbonic acid gas taken from the air and carbonic acid gas produced inbreath- ing, but also great quan- tities of water vapor. The amount of water taken up bj^ the roots is very much larger than is required to be com- bined with carbon and the earthy constituents in the leaves. In order that fresh supplies of. Fig. 14.—By comparing this diagram -with Pis. VIl-IX and tig. 16, the place of eacL cut in tbe tree ^vill be made 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 United States. Division of Forestry. Washington : G. P. O.
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