As regards some Irishmen whom I have known (or, if it must be so, "Irish Yankies"), I sincerely regret that I cannot embrace them, take them by the hand, and call them countrymen. I have noticed them to be men of warm imaginations; and when listening to any detail of Irish intrepidity in the French war--and where is it that Irish blood has not flowed in torrents for the cause of Great Britain?--their hearts appeared elated, and they knew every Irish officer who had distinguished himself; they spoke of his deeds with rapture, and, for the moment, assumed their natural character of British subjects;--for, say what they will, a man feels little enthusiasm in the glories of any nation but his own. I congratulated one upon the change in his ideas:--he started; "No," said he, "I regret not the past; I am, and ever will remain, an American citizen." * * * * * There are three NORTH-AMERICAN mercantile houses--Mr. Ford; Zimmerman and Co.; and Stewart and M'Call. The residents are few, excepting the casual visitors. I find a difficulty in distinguishing them from Englishmen, though a Creole friend of mine pretended to do it, describing the Americans as generally wearing white hats, spectacles, and carrying a stick. This observation I afterwards found tolerably correct. We laugh at their phrases--"I guess,"--"I calculate,"--"I expect," &c.; and they retort upon our continual use of "You know," in conversation. It will be well for the two nations, if their future differences consist only in laughing at each other's peculiarities of speech. The North Americans carry on a considerable trade in this river, and have brought some valuable cargoes from China and India. Flour, lumber, a few dry goods, soap, &c. are their general import; salt vessels also arrive from the Cape de Verd, which article is at times very profitable. Now and then the domestic manufactures of North America are brought to this market; but the profit of them, if any, must be very small. The immense capital, machinery, and talent of England, must for a long time give her the advantage over every other nation; and as regards North America, I should not suppose it would answer her purpose to divert her population from the health-inspiring pursuits of agriculture to a pernicious manufacture. Their chief commerce is in flour; and owing to one or two bad harvests in this province, the advantages have been great. It has been sold at thirty dollars per barrel; the cost in North America being only seven or eight. During the year 1823, upwards of 70,000 barrels of flour was thus imported into Buenos Ayres. For a country so luxuriant in soil to be dependent upon foreigners for bread, appears strange; but agriculture is yet young in South America.