. Bulletin. Forests and forestry -- United States. Fig. 14.—By comparing this diagram -with Pis. VIl-IX and tig. 16, the place of eacL cut in tbe tree ^vill be made earthy constituents in solution may reach the leaves rapidly, the water already in them must be got out of the way. This is eifected by transpiration, which is the evap- oration of water from all parts of the tree above ground, but princi- pally from the leaves. Even where the bark is very thick, as on the trunks of old Oaks and Chestnuts, transpiration goes on through the lenticels in the bot- toms of the dee^:) cracks. It
. Bulletin. Forests and forestry -- United States. Fig. 14.—By comparing this diagram -with Pis. VIl-IX and tig. 16, the place of eacL cut in tbe tree ^vill be made earthy constituents in solution may reach the leaves rapidly, the water already in them must be got out of the way. This is eifected by transpiration, which is the evap- oration of water from all parts of the tree above ground, but princi- pally from the leaves. Even where the bark is very thick, as on the trunks of old Oaks and Chestnuts, transpiration goes on through the lenticels in the bot- toms of the dee^:) cracks. It sometimes happens, especially in spring before the leaves come out, that transpiration can not get rid of the water from the roots as fast as it rises, and that it falls in dro])s from the buds, or later on even from the leaves themselves. Fig. 15.—Top of a common cork, slightly moistened to bring out the lines of annual growth, which are rather unusually plain in this speci- 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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