Jack Slack, a dirty fighter with a hard punch, ended Jack Broughton's distinguished reign as heavyweight champion of England 205 years ago this week. Temporarily blinded after a few minutes of fighting, the clever Broughton was urged to further effort by the Duke of Cumberland, who had bet $250,000 on him. The gallant veteran replied, "I'm blind, Your Grace. Only let me see my man and he shall not beat me yet." But Cumberland could not open Broughton's swollen eyes. In 14 minutes the title had passed to Slack.