OCR Text |
Show . The Flow of Rocks. Among the grants made by the Carnegie Car-negie Institution in support of scientific scien-tific investigations is one item bearing bear-ing this quaint title: "For investigating investigat-ing the flow of rocks." Thus it an- pears that the solid rock can flow, and that it is of importance in science to ascertain as-certain the exact facts about this strange flowing.. Such' investigations are conducted with the aid' of a hydraulic machine capable of producing a pressure of one hundred and twenty tons to the square inch. Under such pressure marble, limestone.' granite and other solid cks actually exhibit the phenomenon of flow, of although, of course, the rate of motion is exceedingly .slow. The import im-port of these investigations relates to the shaping of the earth's crust under the force of gravity. - |