| Description |
Father Linehan uses charts and diagrams to explain the interior structure of the Earth and the transmission of Earth waves through the various layers of the Earth. Dr. Gould emphasizes two facts: (1) seismology is a science that permits us to develop an x-ray picture of the Earth’s interior and, turning to Antarctica, he notes (2) that ice, in the Antarctic, is a rock and hence satisfactory for seismic x-raying. Using film Father Linehan describes the first seismic study ever made at the South Pole to determine the ice depth.
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