Publisher's Synopsis
Excerpt from Use and Conservation of Natural Gas: Especially Adapted for Use in Schools
In no case is the gas found in rooms, caverns, or large crevices, as popularly supposed. The gas sands are simply very porous rocks which contain millions upon millions of small or microscopic cavities, so that the gas occupies these numerous spaces and thus saturates the rock. The gas is obtained by puncturing this sand rock by the hole which is drilled from the earth's surface.
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