On Friday, a letter was left in Merrion-square for Mr. O’Connell, during his absence at the courts. Its direction was different from the former one which came from Mr. D’Esterre; and Mr. James O’Connell, who had instructions to open any communications that were directed to his brother in his absence, ascertained the quarter from whence it came. He sought merely for the signature, and on perceiving it to be Mr. D’Esterre’s, he immediately closed the letter, and stated in a note to Mr. D’Esterre the circumstances under which he opened it. He said he was ignorant of its contents, not wishing, after the request his brother had made on the day previous, to know anything more of Mr. D’Esterre’s epistolary messages. He added, that his brother did not expect to hear a second time from Mr. D’Esterre through the medium of _a letter_. Things remained in this condition till Sunday last. On that day Mr. James O’Connell received a note from Mr. D’Esterre, containing disrespectful observations on himself and his brother. Immediately after the receipt of it, he sent his friend, Captain O’Mullan, to Mr. D’Esterre to say, that after he had adjusted his affair with his brother, he would bring him to account for his conduct to himself peculiarly. Captain O’Mullan at the same time intimated that Counsellor O’Connell was astonished at not hearing, in what he conceived the _proper way_, from Mr. D’Esterre. Nothing farther happened on Sunday; and on Monday morning Mr. Lidwell, who remained here several days to be the friend of Mr. O’Connell, though some members of his family were seriously indisposed, left town for home, despairing of any issue being put to the controversy. Monday passed on; and on Tuesday considerable sensation was created by a rumour that Mr. D’Esterre was advised to go to the Four Courts to offer Mr. O’Connell personal violence. Neither of the parties came in contact. But it seems Mr. D’Esterre was met on one of the quays by Mr. Richard O’Gorman, who remonstrated with him, by stating that he conceived he was pursuing a very unusual sort of conduct. This occurred about three o’clock; but no challenge followed. About four it was understood that Mr. D’Esterre was in the streets; and Mr. O’Connell paraded about with one or two friends, but did not come across his antagonist. A multitude soon collected about him, among whom there could not be less than five hundred gentlemen of respectability; and Mr. O’Connell then had no other resource left, than to take refuge in a house in Exchequer-street. In a short time Judge Day entered, in his magisterial capacity, to put him under arrest. The hon. Justice said he would be satisfied if he had the guarantee of Mr. O’Connell’s honour that he would proceed no farther in the business. “It is not my business, Mr. Justice,” said Mr. O’Connell, “to be the aggressor. Further, however, I must tell you, that no human consideration will induce me to go.” The hon. Justice then retired; and Mr.