Sir: I have the honour to inform you that on the 29th ultimo, at 2 P.M., in south latitude 13°, 06', and west longitude 39°, ten leagues distance from the coast of Brazils, I fell in with and captured His Britannic Majesty's frigate Java, of 49 guns, and upwards of 400 men, commanded by Captain Lambert, a very distinguished officer. The action lasted one hour and fifty-five minutes, in which time the enemy was completely dismasted, not having a spar of any kind standing. The loss on board the Constitution was 9 killed and 25 wounded, as per enclosed list. The enemy had 60 killed and 101 wounded, certainly (among the latter, Captain Lambert, mortally), but by the enclosed letter, written on board the ship (by one of the officers of the Java), and accidentally found, it is evident that the enemy's wounded must have been much greater than as above stated, and who must have died of their wounds previously to their being removed. The letter states 60 killed and 170 wounded. For further details of the action, I beg leave to refer you (p. 168) to the enclosed extracts from my journal. The Java had in addition to her own crew upwards of one hundred supernumerary officers and seamen, to join the British ships-of-war in the East Indies: also Lieutenant-General Hyslop, appointed to the command of Bombay, Major Walker and Captain Wood, of his staff, and Captain Marshall, master and commander in the British navy, going to the East Indies to take command of a sloop-of-war there. Should I attempt to do justice, by representation, to the brave and good conduct of all my officers and crew, during the action, I should fail in the attempt; therefore, suffice it to say, that the whole of their conduct was such as to merit my highest encomiums. I beg leave to recommend the officers particularly to the notice of government, as also the unfortunate seamen who were wounded, and the families of those men who fell in the action. The great distance from our own coast, and the perfect wreck we made the enemy's frigate, forbid every idea of attempting to take her to the United States; and not considering it prudent to trust her in a port of Brazils, particularly St. Salvador, I had no alternative but burning her, which I did on the 31st ultimo, after receiving all the prisoners and their baggage, which was very tedious work, only having one boat left (out of eight) and not one left on board the Java. On blowing up the frigate Java, I proceeded to this place, where I have landed all the prisoners on their parole, to return to England and there remain until regularly exchanged, and not serve in their professional capacities in any place or in any manner whatever, against the United States of America, until the exchange shall be effected.