"Many years ago," he then wrote, "I was at the trial, in one of our district courts, of a man charged with murder. The case was briefly this: the prisoner had gone, in execution of his office as a constable, to arrest a slave who had been guilty of some misconduct, and bring him to justice. Expecting opposition in the business, the constable took several men with him, some of them armed. They found the slave on the plantation of his master, within view of the house, and proceeded to seize and bind him. His mistress, seeing the arrest, came down and remonstrated vehemently against it. Finding her efforts unavailing, she went off to a barn where her husband was, who was presently perceived running briskly to the house. It was known he always kept a loaded rifle over his door. The constable now desired his company to remain where they were, taking care to keep the slave in custody, while he himself would go to the house to prevent mischief. He accordingly ran towards the house. When he arrived within a short distance of it, the master appeared coming out of the door with his rifle in his hand. Some witnesses said that as he came to the door he drew the cock of the piece, and was seen in the act of raising it to the position of firing. But upon these points there was not an entire agreement in the evidence. The constable, standing near a small building in the yard, at this instant fired, and the fire had a fatal effect. No previous malice was proved against him; and his plea upon the trial was, that he had taken the life of his assailant in necessary self-defence. "A great mass of testimony was delivered. This was commented upon with considerable ability by the lawyer for the commonwealth, and by another lawyer engaged by the friends of the deceased for the prosecution. The prisoner was also defended, in elaborate speeches, by two respectable advocates. These proceedings brought the day to a close. The general whisper through a crowded house was, that the man was guilty and could not be saved. "About dusk, candles were brought, and Henry arose. His manner was ... plain, simple, and entirely unassuming. 'Gentlemen of the jury,' said he, 'I dare say we are all very much fatigued with this tedious trial. The prisoner at the bar has been well defended already; but it is my duty to offer you some further observations in behalf of this unfortunate man. I shall aim at brevity. But should I take up more of your time than you expect, I hope you will hear me with patience, when you consider that blood is concerned.'