Aug. 25, 1961 - A County Court jury in Jackson, Miss., convicted a second Freedom Rider today on appeal from a City Court conviction. The jury deliberated less than 15 minutes. Julia Aaron, a 19-year-old Southern University Negro student from New Orleans, received a $200 fine and 4-month jail term. Henry J. Thomas, a 19-year-old former Howard University student, who was tried yesterday, received the same sentence. Both were convicted of breach of peace after they had attempted to desegregate white facilities of the Trailways Bus Station on May 24, the day the first riders arrived in Jackson. Mr. Thomas posted a $2,000 cash appeal bond and said he was going back to Washington. Miss Aaron plans to stay in jail.