Notice. William C. Bates, a Member of the Concord Artillery, who has been held a prisoner of war by the Rebels since the Battle of Manassas, will give some account of his experience in the principal prisons of the South, at the Town Hall, in Concord, on Wednesday Even'g, July 9th, at 8 o'clock. Admission, 10 cents. Concord, July 7th, 1862. Benjamin Tolman, Printer, Concord, Mass.