Arnold's trial was held in June, in Cooperstown. He was speedily convicted of murder, and sentenced to die.
The date fixed for the execution, Friday, July 19, 1805, was a gala day in Cooperstown. The infamy of Arnold's crime had stirred public indignation throughout this section of the State, and the prospect of witnessing his execution had been eagerly anticipated, through motives ranging from morbid curiosity to a stern sense of duty, in the most distant hamlets of the region. By seven o'clock in the morning on the day fixed for the hanging the main street of Cooperstown was filled with people who had travelled from so great a distance that not one in twenty was known to any of the villagers. The concourse increased until shortly after noon, when, in the village which normally contained about five hundred people, the crowd included about eight thousand.
The first centre of interest was the county courthouse and jail which stood at the then western limits of the village, on the southeast corner of Main and Pioneer streets. The door of the jail was on the Pioneer street side of the building, and across the way were the stocks and whipping-post. These rude symbols of justice might well be a terror to evil doers. A sample of the punishment meted out to petty offenders is found in the record that in 1791 a local physician was put in the stocks for having mixed an emetic with the beverage drunk at a ball given at the Red Lion Inn; and four years later a man was flogged at the whipping-post, for stealing some pieces of ribbon. Both culprits were also banished from the village, apropos of which form of punishment Fenimore Cooper at a later day was moved to remark, "It is to be regretted that it has fallen into disuse."
The crowds that gathered to witness the hanging of Stephen Arnold filled the street in the neighborhood of the jail until the prisoner was brought forth at noon, when some remained to watch the parade, while others hurried on to the place of execution to secure good points of view for the spectacle. A procession was formed in front of the court house under the direction of the sheriff. The ministers of religion and other gentlemen, preceded by the sheriff on horseback, moved with funeral music after the prisoner, who was carried on a wagon and guarded by a battalion of light infantry and a company of artillery. In this array the procession moved solemnly down the main street and across the bridge to the place of execution on the east bank of the river. There stood the gallows; at its foot was a coffin.
The condemned man was assisted to a seat upon his coffin. About him gathered the parsons, the representatives of the law, and the soldiery. There was no house on the bank of the river at that time, and the thousands of spectators were massed in the natural amphitheatre which rises, and then rose uninterrupted, toward the east, from the shore of the Susquehanna.
An interested observer who looked down upon the assemblage from the high western bank of the river has recorded a vivid impression of the beauty of the scene and the picturesque and emotional qualities of the occasion.[93] Looking back toward the village, and then sweeping with a glance the north and east, his eye caught the roofs of buildings covered with spectators, windows crowded with faces, every surrounding point of view occupied. The natural amphitheatre across the river was "filled with all classes and gradations of citizens, from the opulent landlord to the humble laborer. Blooming nymphs were there and jolly swains, delicate ladies and spruce gentlemen, fond mothers and affectionate sisters, prattling children and hoary sages, servile slaves and imperious masters." In the elevated background of the landscape carriages appeared filled with people. It was a warm July day, brilliant with sunshine, and splendid in the greenery of summer foliage. The throngs of spectators, tier upon tier, as it were, presented a kaleidoscopic effect of movement and color, in the undulating appearance of silks and muslins of different hues, as the eye traversed the multitude; in the swaying and bobbing of hundreds of umbrellas and parasols of various colors; in the vibration of thousands of fans in playful mediation, while the death-struggle of a man upon the gallows was eagerly awaited. In the foreground, on the bank of the Susquehanna, the gibbet, with the solemn group about it, relieved only by flashes of color in the military uniforms, and by the gleam of swords and bayonets, fascinated every eye.
A great silence fell upon the multitude when the preliminaries to the execution began with a prayer offered by the Rev. Mr. Williams of Worcester. The Rev. Isaac Lewis, pastor of the Presbyterian church in Cooperstown, then stood forth to deliver the sermon. Few preachers, even in the largest centres of life, have occasion to address congregations numbered by thousands. What an opportunity was here given to an obscure country parson, when he faced an audience of some eight thousand people! Mr. Lewis preached upon the subject of the Penitent Thief, taking as his text the forty-second and forty-third verses of the twenty-third chapter of St. Luke: "And he said unto Jesus, Lord, remember me when thou comest into Thy Kingdom. And Jesus said unto him, Verily I say unto thee, Today shalt thou be with me in Paradise." Nothing is recorded of the sermon beyond that it was "a pathetic, concise, and excellently adapted discourse." Elder Vining closed the religious exercises by a solemn appeal to the throne of grace for mercy and forgiveness, as well for the vast auditory as for the prisoner.
The condemned man seemed deeply affected, and perfectly resigned to the justice of his fate. His penitence was manifest, and drew forth tears of sympathy from the spectators. After the exercises the prisoner seated himself on the coffin for a short space, when he was informed that if he wished to say anything to the people he might now have opportunity. He arose and addressed a few words to the surrounding multitude, earnestly urging them to be warned by his fatal example to place a strict guard upon their passions, the fatal indulgence of which had brought him to the shameful condition in which they beheld him, notwithstanding he never intended to commit murder. He concluded his address with these words: "It appears to me that if you will not take warning at this affecting scene, you would not be warned though one should arise from the dead."
At the conclusion of this speech the sheriff stepped forward and made ready for the hanging, finally adjusting the fatal cord, except for fastening it to the beam of the gallows.