Lord Hamilton
with his wife on his arm
walked along the royal canal
through the heart of dublin town

     by the broom bridge
     the formula came to him
     he scratched it in the stone
     he called it the quaternion

Lord Hamilton
rhymed the dimensions:
"One of Time
of Space the Three,
in the Chain of Symbols
girdled be--"

      by the broom bridge . . . .

centuries fade
and his scratchings has worn away
in its place a plaque
honoring his genius flash

     by the broom bridge . . . .

          we think we really here
          standing on the ground
          we think we really know
          until we reach the bridge
          that crosses the canal
         
          just take a look around
          falling up's like falling down
          he scratched it in the stone
          called it the quaternion