* Salt.
   Common salt, or muriate of soda, consists of soda in
   combination with muriatic acid, and is for the most part an
   artificial preparation from sea water, though found in some
   countries in a solid and massive state.  See particularly Le
   2:13.

 * but.
  Mt 5:13  Mr 9:49,50  Col 4:6  Heb 2:4-8