. Bulletin. Forests and forestry -- United States. SUCCESSION OF FOREST TREES. 39 winged seeds are blown long distances—sometimes as mncli as several miles. This explains how certain kinds of trees, like the Grray Birch and the White Pine, grow uj) in the mid- dle of open pastnres, and how others, such as the Lodgepole Pine, cover great areas, far from the parent trees, with young growth of even age. THE SUCCESSION OF FOREST TREES. Such facts help to ex- plain why, in certain places, it happens that when Pines are cut down Oaks succeed them, or when Oaks are removed Pines occupy the ground. It
. Bulletin. Forests and forestry -- United States. SUCCESSION OF FOREST TREES. 39 winged seeds are blown long distances—sometimes as mncli as several miles. This explains how certain kinds of trees, like the Grray Birch and the White Pine, grow uj) in the mid- dle of open pastnres, and how others, such as the Lodgepole Pine, cover great areas, far from the parent trees, with young growth of even age. THE SUCCESSION OF FOREST TREES. Such facts help to ex- plain why, in certain places, it happens that when Pines are cut down Oaks succeed them, or when Oaks are removed Pines occupy the ground. It is very often true that young trees of one kind are already growing un- noticed beneath old trees of another, and so are ready to replace them whenever the upper story is cut away. (See fig. 33.) PURE AND MIXED FOREST. The nature of the seed has much to do with the distri- bution of trees in pure or mixed forest. It is the habit of some trees to grow in bodies of some extent contain-. FiG. 37.—Pure forest of White Cedar near Toms River, Xew 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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