The Collaborative International Dictionary of English v.0.48:

Bassorin \Bas"so*rin\, n. [Cf. F. bassorine.] (Chem.)
   A constituent part of a species of gum from Bassora, as
   also of gum tragacanth and some gum resins. It is one of the
   amyloses. --Ure.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cerasin \Cer"a*sin\, n. (Chem.)
   A white amorphous substance, the insoluble part of cherry
   gum; -- called also meta-arabinic acid.
   [1913 Webster]

   2. (Chem.) A gummy mucilaginous substance; -- called also
      bassorin, tragacanthin, etc.
      [1913 Webster]