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Many floods which occur in the United States occur because we have cut down large areas of trees which formerly protected the sources of streams and rivers. A grave danger that threatens western farming is that some time in the future the greater part of the vegetation and forest cover on the watersheds of that section may entirely disappear.
They commonly contain a good deal of waste derived from the organic life which dwelt upon the sea bottom and was embedded in the strata as they were formed. Where these accumulations are made in a lake, the land vegetation at once possesses the field, even a single year being sufficient for it to effect its establishment.
An important effect of this decayed vegetation is to restrain the movement of the surface water. Even in the heaviest rains, provided the mass be not frozen, the water is taken into it and delivered in the manner of springs to the larger streams.
A hundred years later it was rebuilt, but its beautiful forum, its classical temples, its mosaic-paved villas and marble theatres had disappeared utterly, and the new city was but a shadow of the old. In the tenth century the Saracens conquered Nice, and remained in quiet possession for seventy years, and during their stay introduced much of the tropical vegetation which we still admire.
The trail passes along on high ground say a thousand feet above sea level and usually about a mile distant from the ocean, which is always in sight, save that occasionally you find yourself buried in the forest in the midst of a rank tropical vegetation and a dense growth of trees, whose great bows overarch the road and shut out sun and sea and everything, and leave you in a dim, shady tunnel, haunted with invisible singing birds and fragrant with the odor of flowers.
The red portion of the bodies of the Zenichi denote red corn; the black portion black clouds. The red half of the face represents also the red corn; the blue of the bodies of the others denote vegetation in general, and the yellow, pollen of all vegetation.
Febrer felt belittled by the solitude. Faith in his human importance destroyed, he considered himself no bigger than one of those tiny creatures swarming about in the vegetation of the submarine abyss perhaps even smaller. Those animals were armed for life, they could sustain themselves by their own strength, never knowing the discouragement, the humiliations and the sorrows which afflicted him.
The tremendous fissures or quebradas, so frightful in this mountain chain, yawned open, as if the Andes had been split asunder by some terrible convulsion, showing a broad expanse of the primitive rock on their sides, partially mantled over with the spontaneous vegetation of ages; while their obscure depths furnished a channel for the torrents, that, rising in the heart of the sierra, worked their way gradually into light, and spread over the savannas and green valleys of the tierra caliente on their way to the great ocean.
Humboldt came to America to realize his youthful dreams of a tropical vegetation, and he beheld it in its greatest perfection in the primitive forests of the Amazon, the most gigantic wilderness on the earth, which he has so eloquently described.
Many deep and gloomy gorges, choked with trees and bushes, opened from the sides of the hills, which were shaggy with forests wherever the rocks permitted vegetation to spring.
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