Latter Wins a Slow Contest After,Twenty Rounds of Poor Fighting Before Unappreciative CaliforniaCrowdSpecial to The Journal!SAN FRANCISCO, August 31—Tommy Burns knocked out Dave Barry in the twentieth round of a very slow fight here tonight. The first fourteen rounds were very tame and the crowd constantly urged the men | to tight. In the fifteenth round Burn?: caught Barry with a right to the Jaw} and sent him down for the count. He rose groggy and managed to last out the round.In the last round Burns landed several hard right swings and finally scored a knockout.- ^ - k