. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). 39 mud is furnished from a grindstone wlien a knife or scythe is being sharpened on it. On the pebbly beaclies of the sea or lakeshore much the same thing may be seen ; and here also the constant grind- ing of the rocks together wears off the edges until tiie pebbles become smooth and round. Supplied with l)its of rock from the soil, or ground from the peb- bles and rocks along its course, the stream carries its load onward,. 16.— The bed of a stream at low water, revealing the rounded pebbles that havebeen
. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). 39 mud is furnished from a grindstone wlien a knife or scythe is being sharpened on it. On the pebbly beaclies of the sea or lakeshore much the same thing may be seen ; and here also the constant grind- ing of the rocks together wears off the edges until tiie pebbles become smooth and round. Supplied with l)its of rock from the soil, or ground from the peb- bles and rocks along its course, the stream carries its load onward,. 16.— The bed of a stream at low water, revealing the rounded pebbles that havebeen worn and smoothed by being rolled about, thus grinding off tiny bits which later are built into the flood-plains. perhaps to a lake, which it commences to fill, forming a broad delta of level and fertile land, near where the stream enters the lake. Or, possibly, the stream enters the sea and builds a delta there, as the Mississippi river has done. But much of the mud does not reach the sea. The greatest sup- ply comes when the streams are so flooded by heavy rains or melt- ing snows that the river channel is no longer able to hold the water, 431. 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 New York (State). Dept. of Agriculture; New York State Agricultural Experiment Station; Cornell University. Agricultural Experiment Station. Albany : State of New York, Dept. of Agriculture
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