Of the churches, that of St. Francisco seems most profusely ornamented. Virgins and saints of all descriptions occupy every altar and nook of the interior, clothed in rich and fanciful attire, which the devotion of the faithful has bestowed. The grand altar is very brilliant; and when fully lighted, it appears a sheet of gold. Some of the ornaments, I should think, are valuable. This edifice is of considerable length, and contains twenty friars of the order of St. Francisco, the only community of the sort now existing in Buenos Ayres. The towers are paved with tiling, which, at a distance, looks like marble. St. Francisco's church is my favourite, for, child-like, I am attracted by glitter. The College church is one I rarely visit, from prejudice or revenge at an insult offered to me by one of the servants, who told me Englishmen had no business there, and absolutely took my arm to conduct me out. In any other place I should have chastised him.--It is a gloomy structure, both outside and inside, even with the usual decorations. The Holy Ghost proceeds on its different missions from this church. St. Domingo church is large, with a spacious dome. It had, until the suppression, in 1822, forty-eight friars of the Dominican order; amongst whom was an Irish priest, Father Burke, who, from motives of kindness, is still allowed to occupy his apartment. He is more than 70 years of age, and much esteemed by the British as well as natives, being divested of those prejudices which so often disgrace his cloth. The rooms of the friars, and the garden, make it a comfortable retreat. The interior of St. Domingo is light and airy, without much decoration; but it contains objects that swell the beating hearts of Englishmen--British standards ranged around the dome, the trophies of Beresford's and Whitelock's expeditions. Crawford, with part of his division, it will be recollected, took refuge in this church. I have viewed those flags with the most painful recollections, obtained, as they were, not in open fight, but by concealed and inaccessible enemies; and have felt for the fate of my unhappy countrymen, slaughtered, without an opportunity to retaliate, by those who could not have stood one half-hour before them in a fair field of battle. This city is almost the only one in the world that can boast the possession of such prizes. The church of Le Merced is a very pretty building, with a dome and tower. The interior is compact, and, in splendour, very little inferior to St. Francisco; containing virgins, Madonas, holy pictures, &c. &c. in gorgeous abundance, with the usual quantity of confessional boxes. It is much resorted to. Until lately, it held forty-five friars, of the order of Le Merced; a peculiar order, allowing its professors, it is said, to wear concealed arms. One of the regiments attends divine service, and their band performs, in this church.