...ble at any point No batteries have yet been erected at Mathias Point, nor are there any signs of such an intention to be seen. The St. Nicholas having been taken up the Rappahannock river, the Pa. nee goes down to-day to relieve the Pocahontas at Aquia Creek, when the latter will at once close the trap into which the St. Nicholas has been taken. She can be of no service where she now is and s...