1911 Encyclopædia Britannica/Agonic Lines

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1208211911 Encyclopædia Britannica, Volume 1 — Agonic Lines

AGONIC LINES (from Gr. α-, privative, and γωνία, an angle), the term given to the imaginary lines on the earth’s surface connecting points at which the magnetic needle points to the geographical north and south. (See Magnetism, Terrestrial.)