Samian earth

from The Collaborative International Dictionary of English v.0.48

Samian \Sa"mi*an\, a. [L. Samius.]
   Of or pertaining to the island of Samos.
   [1913 Webster]

         Fill high the cup with Samian wine.      --Byron.
   [1913 Webster]

   {Samian earth}, a species of clay from Samos, formerly used
      in medicine as an astringent.
      [1913 Webster]