On Thursday afternoon the sloop Dove, Capt. [Nathan] Bull, belonging to Rhode-Island, was brought into Port-Royal harbour. This vessel had loaded at Cape Nichola Mole with French produce, and on her passage homeward was met by his Majesty's ship Maidstone, Allan Gardiner, Esq; commander, who seized her. We are informed that the Maidstone was then in chase of a brigantine and sloop, the latte; laden with gunpowder, and came out of Cape Francois, which was yesterday sent in.