The Bangor Mercury states that Rev. John Bapst, a Catholic pastor in that city, was tarred and feathered and ridden on a rail, on Saturday night, at Ellsworth, while on a visit to that place. He was formerly pastor in Ellsworth, and was then engaged in a controversy about the school question. The excuse the persons give is that they previously threatened to tar and feather Mr. Bapst if he came to Ellsworth again. The Mercury says: he has been pastor of the Catholic population only a few months. We understand he was born and educated in Italy. Since he has been here, he has done much good among the Catholic population, and has brought about many useful reforms, winning recommendation on all hands.