The Collaborative International Dictionary of English v.0.48:

Australize \Aus"tral*ize\, v. i. [See Austral.]
   To tend toward the south pole, as a magnet. [Obs.]
   [1913 Webster]

         They [magnets] do septentrionate at one extreme, and
         australize at another.                   --Sir T.
                                                  Browne.
   [1913 Webster]