Popular science monthly . On the left is a piece of rhyolitic pumiceand on the right a piece of hydrocarbon may be mentioned. Near Richmond,\irginia, it forms a bed thirty feet thickand one hundred miles in extent; andnear Monterey, California, there is a bedof it fifty feet in thickness, but of extent. When samples of it are subjected to awater bath for hours they seem not toabsorb the water. Toaltempt to water-log a piece of pumice is foolhardy. The Colorado River after one of its overflows when the waterhas receded and the western sunlight has baked the bed A Mud Mosaic in the Wak
Popular science monthly . On the left is a piece of rhyolitic pumiceand on the right a piece of hydrocarbon may be mentioned. Near Richmond,\irginia, it forms a bed thirty feet thickand one hundred miles in extent; andnear Monterey, California, there is a bedof it fifty feet in thickness, but of extent. When samples of it are subjected to awater bath for hours they seem not toabsorb the water. Toaltempt to water-log a piece of pumice is foolhardy. The Colorado River after one of its overflows when the waterhas receded and the western sunlight has baked the bed A Mud Mosaic in the Wake of theTreacherous Colorado WHEN the great Colorado Rivergoes on a rampage and o\erflowsits banks it deposits vast quantities ofmud and sediment. In this way it hasbuilt up the enormous rich Coloradodelta in Arizona and Southern California,cutting out, through the countless ages,the huge gorge of the Grand Canyon, inmany ])laces a mile deep through therock. The photograph shows whathappens to the Colorado River clay,u|)&
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
