Buenos Ayres, June 23d,1842.

Sir,—I have had the honour to receive your Excellency's dispatch, marked confidential, of the 18th instant, in answer to mine of the 8th, which was delivered to me this morning, the contents of which will cause great satisfaction to her Majesty's Government, as to me they have procured the highest gratification. Her Majesty's Ministers will see, in the determination of the Monte Videan Government to conclude a Treaty of Amity, Commerce, and Navigation, with Great Britain, on the terms proposed by Mr. Hamilton and by me, the most unequivocal proof of the loyalty of its intentions towards the British Empire, and of its friendly sentiments towards her Majesty's Government.

I shall, in consequence, avail myself of the friendly dispositions of the Monte Videan Government for the adjustment and conclusion of the treaty which your Excellency has done me the honour to communicate to me, and I propose, in a few days, to embark for Monte Video, for the termination of so honourable and desirable an event.

I have the honour to be, with the highest consideration, Sir,

Your Excellency's obedient humble servant,

J. H. MANDEVILLE.

To his Excellency D. Jose Antonino Vidal, &c. &c. &c.