. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 184. 87.—A pot-liole cut in the rock of a stream's bed. thicker than others, showing a longer period of flood or perhaps several floods in which there was little variation. This straiificatiou, as it is called, is one of the peculiarities of water deposits and it is due to the as- sorting power of currents which vary in force. If we were to cut into the delta we should And the same thing to be true — a regular succession of layers though sometimes confus
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 184. 87.—A pot-liole cut in the rock of a stream's bed. thicker than others, showing a longer period of flood or perhaps several floods in which there was little variation. This straiificatiou, as it is called, is one of the peculiarities of water deposits and it is due to the as- sorting power of currents which vary in force. If we were to cut into the delta we should And the same thing to be true — a regular succession of layers though sometimes confused by changes in direc- tion of flow. To-day we shall notice something which escaped our attention when it was held by the rushing torrent — the valley bottom is much wider than the bed of the stream ; if we keep our eyes open we shall see the explanation of this in the abandoned channels, where, owing to some temporary obstructions, the stream has been turned from side to side of the valley, now cutting on one bank and now on the other. In this turning from side to side the cutting area of the stream is increased and it goes on widening its valley as well as cut- ting it downward. And now we have learned some of the most important ways in which the busy brook is toiling ; but there are other points which we might have seen, and in some brooks there are special features to be noted. However, we have learned that the brook is no idler, that its main purpose is to conduct to the ocean the rain that falls upon the earth's surface, and that in doing this it is wearing down the hills, carrying them away only to build up in other deposits. The cheerful song of the brook takes on a new meaning as we lie in the shade and watch it hurry by. It is not the song of idleness nor pleasure, but the song with which a cheerful and tireless worker seeks to make its task lio^hter. 536. Please note that these images are extracted from scanned page images that may have been digitally enhanced
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