On the third of September the British gun-boats sailed from Isle aux Noix, to cover the left flank of their army, then marching on Plattsburg. The boats were under the orders of Captain Pring, and on the 4th that officer took possession of Isle aux Motte, where he constructed a battery, and landed some stores for the troops.

On the 8th, Captain Downie arrived, with the four large English vessels, and remained at anchor until the 11th. At daylight of that day the whole force weighed anchor and proceeded, in a body.

The American guard-boat pulled in, soon after sunrise, and announced the approach of the enemy. As the wind was fair—a good working breeze from the northeast—the English came down the lake rapidly, and Captain McDonough ordered the ships cleared for action, and preparations made to fight at anchor.

Eight bells were struck in the American squadron as the upper sails of the British vessels were seen passing along the neck of land in the main lake, on their way to double Cumberland Head, in order to enter the bay. They had the wind a little on the port quarter, the booms of their small vessels swinging out to starboard. The Finch led, followed by the Confiance, Linnet and Chubb, while the gunboats, which, like those of the Americans, each carried two latine sails, followed without much order; keeping just clear of the shore.

The first vessel which came round the head was a sloop, which is reported to have carried a company of amateurs, and which took no part in the engagement. She kept well to leeward, standing down towards Crab Island, and was soon lost to observation in the events which followed. It is this vessel, undoubtedly, which has made the difference in the numbers of the enemy reported by the two commanders.

McDONOUGH’S VICTORY ON LAKE CHAMPLAIN.

The Finch came round next; and soon after the other large vessels of the enemy opened from behind the land, and hauled by the wind, in a line abreast; lying to until their galleys could join. The latter proceeded to leeward and formed in the same manner as the larger vessels. The two squadrons were now in plain view of each other, and distant about three miles.

As soon as their gun-boats were in their stations, and the different commanders had received their orders, the English filled away, on the starboard tack, and headed in towards the American vessels, in a line abreast—the Chubb to windward and the Finch to leeward—most of their gunboats being to leeward of the Finch. The movements of the latter vessel had been a little singular ever since she led round the Head—for she is said not to have hove to, as the rest did, but to have run off with the wind, halfway to Crab Island, then to have tacked, and got into her station after the other vessels had filled.