As I closed the door after me, I heard the captain laugh, and thought I could distinguish the words--'By ---- I knew Fitzgerald would bring him to his way of thinking before he stopped.' I followed O'Connor into his study, and on entering, the door being closed, he showed me the communication which had determined him upon hostilities. Its language was grossly impertinent, and it concluded by actually threatening to 'POST' him, in case he further attempted 'to be OFF.' I cannot describe the agony of indignation in which O'Connor writhed under this insult. He said repeatedly that 'he was a degraded and dishohoured man,' that 'he was dragged into the field,' that 'there was ignominy in the very thought that such a letter should have been directed to him.' It was in vain that I reasoned against this impression; the conviction that he had been disgraced had taken possession of his mind. He said again and again that nothing but his DEATH could remove the stain which his indecision had cast upon the name of his family. I hurried to the hall, on hearing M'Donough and the captain passing, and reached the door just in time to hear the latter say, as he mounted his horse: 'All the rest can be arranged on the spot; and so farewell, Mr. M'Donough--we'll meet at Philippi, you know;' and with this classical allusion, which was accompanied with a grin and a bow, and probably served many such occasions, the captain took his departure. M'Donough briefly stated the few particulars which had been arranged. The parties were to meet at the stand-house, in the race-ground, which lay at about an equal distance between Castle Connor and the town of T----. The hour appointed was half-past five on the next morning, at which time the twilight would be sufficiently advanced to afford a distinct view; and the weapons to be employed were PISTOLS--M'Creagh having claimed, on the part of his friend, all the advantages of the CHALLENGED party, and having, consequently, insisted upon the choice of 'TOOLS,' as he expressed himself; and it was further stipulated that the utmost secrecy should be observed, as Fitzgerald would incur great risk from the violence of the peasantry, in case the affair took wind. These conditions were, of course, agreed upon by O'Connor, and M'Donough left the castle, having appointed four o'clock upon the next morning as the hour of his return, by which time it would be his business to provide everything necessary for the meeting. On his departure, O'Connor requested me to remain with him upon that evening, saying that 'he could not bear to be alone with his mother.' It was to me a most painful request, but at the same time one which I could not think of refusing. I felt, however, that the difficulty at least of the task which I had to perform would be in some measure mitigated by the arrival of two relations of O'Connor upon that evening.