The investigation of the affair was placed in the hands of S. H. Carpenter, Superintendent of the Canadian Secret Service, and detectives were at once set at work upon the case. Either Mr. Carpenter or one of the men under his direction was constantly in the vicinity, seeking to obtain clues by which to determine the guilty party. One man, who lived near the mountain pass between Sutton and Glen Sutton, declared that, early on the morning of July 8th, he had seen two men pass his house driving very rapidly and going in the direction of the latter village, one of the men having no hat, but wearing a cloth around his head. Of course this story had an air of significance inasmuch as the assailant of the previous night had left his hat at Sutton Junction, but it did not prove to be of much importance. It was soon settled in the minds of many that the stranger whom we have mentioned as having been frequenting the hotels at Sutton and Abercorn had been the wielder of the lead pipe on July 8th, but his name and whereabouts were not to be obtained, as he had been sailing under false colors during his stay in the country, and those who were initiated into the secrets of the case, of course, kept silence. At length, Mr. Smith received a letter from a woman in Vermont, who had formerly been employed at one of the hotels in the vicinity of the assault, and soon after he met this same woman at Sutton, and her evidence was a great aid towards locating the assailant. She knew nothing about the pretended Boston horse-buyer, who had apparently forgotten the object of his northward journey and disappeared without having purchased any of the Canadian steeds, but she remembered an American having once stopped for a time at the hotel where she was then working, and from the description given it seemed that he might be the same man. The one whom she described she said came from Marlboro, Mass., and thither a man was soon despatched in search. It proved that the man to whom she had directed Mr. Smith was not the one in question, but in searching for him the real perpetrator of the crime was found, as he chanced to be also a resident of Marlboro, Mass. Having located his man, the gentleman in search returned home, leaving in Marlboro a Canadian detective who should keep watch of the man until Mr. Carpenter went there. However, when Mr. Carpenter, who was accompanied by Mr. Smith, reached the place, the man whom they sought had already been lost track of by the detective, but after a few days Mr. Smith saw him in company with several others, and at once identified him as being the man whom he had seen in the vicinity of Sutton Junction previous to the assault, and also as having the form and gait which he had noticed his assailant to have when he had watched him fleeing from the scene of his cowardly attack. Soon this man was captured at Hudson, Mass., a place about five miles distant from Marlboro. He was arrested by Chief of Police Skully of Hudson and