Fresh advices from the northern army. Providence, October 14. : the following is extracted from the Boston gazette of yesterday. Boston, October 13. This morning, at three o'clock, an express arrived at General Heath's, with the following letter, viz. Camp three miles above Stillwater, October 9, 1777. Dear General . - Glover, John, 1732-1797; Heath, William, 1737-1814 ([Printed by John Carter], 1777)