THE COLUMBIA IS DISABLED; Steel Mast Breaks During Race with the Defender. SHROUD WAS OUT OF POSITION Columbia Had Three Minute Lead at the Time.

NEWPORT, Aug. 2. -- A most unfortunate accident to the Columbia to-day marred the pleasure of what promised to be a thorough test of the relative speed of that boat and the Defender in a nice topsail breeze, and late this afternoon the new boat was towed up to her builders' works at Bristol a total wreck above decks.