JACK JOHNSONIS IN JAILSun Francisco, Cul., March 31.—For twenty-five days ut least the press wires will not hum with the news that John Arthur Johnson has been burning up the boulevards in his high powered motor car and the prospects are that it will be many a long day thereafter before the negro pugilist again ventures to throw the throttle wide open.John Art ha today lai uishes behind the bars of the county basti'e with every prospect that he will continue to languish there for the entire twenty-live days’ sentence imposed on him by Judge Treadwell last week for speeding. Judge Morgan of the circuit court lute yesterday dismissed the pugilist’s appeal from the lower court decision and ordered the negro committed to jail. Ten minutes thereafter Jack was behind the burs