. St. Nicholas [serial] . of the night. The light itselfis a gaslight worked by a mechanical device, andburns day and night the year round. The gas issupplied by the lighthouse tenders or supply-boats, which charge the buoy at necessary in-tervals. So in summer seas or winter gales, the buoy,ever faithful, sends forth its message to guidethe brave and hardy toilers of the deep. William R. McDowell. THE DEVILS POST-PILE Out in the ancient lava-fields of California,about thirty miles southeast of Yosemite Val-ley, there is a basalt formation belonging inthe same class as the Giants Causeway ofIr
. St. Nicholas [serial] . of the night. The light itselfis a gaslight worked by a mechanical device, andburns day and night the year round. The gas issupplied by the lighthouse tenders or supply-boats, which charge the buoy at necessary in-tervals. So in summer seas or winter gales, the buoy,ever faithful, sends forth its message to guidethe brave and hardy toilers of the deep. William R. McDowell. THE DEVILS POST-PILE Out in the ancient lava-fields of California,about thirty miles southeast of Yosemite Val-ley, there is a basalt formation belonging inthe same class as the Giants Causeway ofIreland and Fingals Cave of Scotland. Someearly explorer, impressed with the huge, up-standing columns of rock and the mass ofbroken fragments heaped up at their base,called it the Devils Post-pile. This name,which has a crude fitness, was fixed by Con-gress when it created this formation theDevils Post-pile National Monument, on July6, 1911. This leads mc to remark that his SatanicMajesty has acquired considerable property. THE POST-PILE FROM A CAMP BELOW IT 1920.] NATURE AND SCIENCE FOR YOUNG FOLK 755 in the United States. He now has title toquantities of gardens all over the country;several lakes and rivers; a whole ridge inTexas; a tower in Wyoming; a causeway inColorado; a slide and a gate in Utah; the post-pile and a gulch in California; an inkstandand a kitchen in Yellowstone Park; and upin Idaho he has gone into partnership withsix other friends and filed on the Seven DevilsMountains, along Snake River. Originally the causeway, the cave, and thispost-pile were lava flows of considerablethickness. As these masses of molten rockcooled, they separated into hundreds of thou-sands of columns by the forces of columns were mostly six sided, andstood roughly perpendicular to the surface ofthe ground. They are not crystals in anysense of the word. The Palisades of the Hud-son and the Rhine are of similar origin, asare other palisade formations all over the world.
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