Arrived at Catwater the Betsy schooner, John Galle, late Master, from Nantz, bound to North Carolina, with salt, bale goods, gunpowder, and arms; a prize taken by his Majesty's ship Centaur. This vessel carried a cargo of rice and indigo to Nantz, and was taking back a cargo in return. By this vessel we learn that the river of Nantz swarms with American vessels.