The Fourth Beast was dreadful, terrible and strong.  It had great iron teeth.

        It devoured, tore in pieces and stamped the other beasts with his feet and was different from all the other beasts that were before it.  It had ten horns.

                The iron corresponds to the Iron limbs and the Then toes of the colossus or Nebuchadnezzar.  It stood for the Fourth World Empire, the Roman.