A River Journey

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D. Appleton, 1904 - Rivers - 277 pages
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Page 27 - A second object of underdrainage is to dry the ground quickly after a freeze. When the frost comes out of the ground in the spring, the thawing is quite as much from the bottom as from the top. If the land is underdrained, the water when released by thawing from below will be immediately carried away. This is particularly important in road drainage, since the foundation will then remain solid and the road itself will not be cut up.
Page 87 - Rocks and earth are constantly rolling down upon the glacier, especially in the spring, when the frost comes out of the ground and loosens them.
Page 85 - A glacier of the Cascade Range in northern Washington. Though it is August, the higher parts are covered by snow and there are banks of snow farther down.

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