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North Star Navigation

    Naturevolume 115page637 (1925) | Download Citation



    IT may be taken as an axiom in practical navigation that, so far at least as the northern hemisphere is concerned, no pair of observations can be depended upon to furnish with greater readiness and simplicity the true position of a ship than an altitude of Polaris—the Pole-star—in combination with that of some other star, observed about the same time on a reasonably large azimuth, and preferably in the neighbourhood of the prime vertical.

    North Star Navigation.

    By L. M. Berkeley. Pp. 86. (New York: The White Book and Supply Co., 1924.) 3.75 dollars.

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