An arrival from New York brings accounts from the frontier
of Upper Canada, dated May the 20th. It seems that an American schooner had been seized by Colonel FRASER, collector at the port of Brockville ; and a gun she had on board taken by a mob and carried in triumph through the town. No reason for this act of violence is given ; and on the application of Colonel WORTH, com- manding the United States troops on the frontier, the vessel and gun were promptly restored. A Captain NYE, according to an Ameriean paper, has been "playing the fool" in New Brunswick. This person, at the head of a few armed men from Maine, went into a part of the disputed territory to carry away some felled timber, but was driven off by the British Warden, Mr. M‘Louomax.