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Folded mountains often show a core of igneous rock, which by long erosion has come to form the axis and the highest peaks of the range, as if the molten rock had been squeezed up under the rising upfolds.
The erosion of ages from the hillside had slowly formed this deposit of fat earth. Under the oaks, almost buried in them, stood a rough, unpainted cabin, the wide verandah of which, with chairs and hammocks, advertised an out-of doors bedchamber. Daylight's keen eyes took in every thing.
The master streams and their main tributaries now wander with sluggish currents over the broad valley floors which they have planed away; while under the erosion of their innumerable branches and the wear of the weather the divides everywhere are lowered and subdued to more and more gentle slopes.
In some cases the passage of masses of free cocci in the lymphatics, or of infective emboli in the blood vessels, leads to the formation of pyogenic abscesses in vital organs, such as the brain, lungs, liver, kidneys, or other viscera. Hæmorrhage from erosion of arterial or venous trunks may take place and endanger life. Treatment.
By the erosion of the igneous rocks the metals have been distributed among sedimentary strata, and even the sea has taken into solution an appreciable amount of gold and other metals, but in this widely diffused condition they are wholly useless to man. The concentration which has made them available is due to the interaction of many agencies.
There are those well meaning theorists who harp on the inherent right of every free born American to do with his land what he wants to cultivate it well or badly; to conserve his timber by cutting only the annual increment thereof or to strip it clean, let fire burn the slash, and erosion complete the ruin; to raise only one crop and if that crop fails, to look for food and support from his neighbors or his government.
No sign of rough weather; and, mind you there are a number of different lines of communication. But they're all blocked, telegraph and telephone. Our chief tried to get through viâ the Continent, just to give us something to go on. But it was no go. Odd, isn't it?" "Very," I agreed, as we turned; and I added, rather inanely: "One hears a lot about East Anglian coast erosion."
"My internal organs have for some time suspected that hostile influences were at work. For how long have you noticed this, as it may be expressed, falling off?" "My mind is as refined crystal before your compelling glance," admitted Lin. "Ever since it has been your custom to wear the funeral robe fashioned by Shen Heng has your noble shadow suffered erosion."
There are also cases where similar apparent effects are produced by local oceanic currents, by river deposit or erosion, by tidal action, or by the influence of the wind upon the waves and the sands of the seabeach.
The effects produced on the land by the later elevatory movements, namely, successively rising cliffs, lines of erosion, and beds of literal shells and pebbles, all requiring time for their production, prove that these movements have been very slow; we can, however, infer this with safety, only with respect to the few last hundred feet of rise.
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