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Show Science Notes Changes in Position of Pole Although Ihe inhabitants of the earth are not perceptibly al'fecled by Ihe wandering molion of Ihe North pole, yet It Is a phenomenon of in creasing Interest to scientists, purlieu-larly purlieu-larly a.sl ronomers. This molion, which Is suggestive of the "wabbling" ol a top, Is extremely slight when the vast size of the earth Is taken 111 account. For about .'Id years the North pole has never, It Is claimed, been more than ,'i.ri feet away from the place It should occupy If the earth's axis of revolution never varied In direction. The amount of variation has been learned by the International Geodetic association through observations observa-tions and four observing stations, all close to the thirty-ninth degree of North latitude, and all within Mi, feel of ihe same parallel. These are at Midzusawa, Japan ; Cnroloforte, Sardinia Sar-dinia ; Gallliersburg, Md., and L'kiah, Calif. Precisely similar observations with exactly the same kind of zenith telescopes are made ut each station on carefully selected stars. In this way, any change in the direction of the p"le reveals Itself by a shift of ihe stars. |