PLAINFIELD GAZETTE. PLAINFIELD, WN. J. Thursday, June 21, 1849. *‘Nasaville, June 16, 1849. *Ex-President James K. Polk is no more. He died last evening of chronic diarrhea.’ It was previously known that Mr. Polk was suffering from a severe attack of dis ease, but we were not prepared for the sad intelligence which has now reached us. James Knox Polk,the eleventh Presi dent of the United States, was born on the 2nd of November 1795. Consequent ly, he died at the age of fifty-four years, seven months and thirteen days. No other, President or Ex-President of the United States died so young. Of all the twelve Presidents of the Uni ted States, only three ‘survive, including the present incumbent. ’