That Richard Montgomery succeeded fully in gaining the confidence of these Canada rebels is shown by the fact that they made him a medium of communication between themselves and the Richmond government. His character is further shown by the fact that when they paid him one hundred and fifty dollars for carrying despatches to Richmond he credited the government with it on his expense account. And that he acted faithfully in the discharge of his duties to his government is shown by the fact that he always submitted the despatches sent by him to the authorities at Washington, where copies of them were kept when they were allowed to pass. This is sufficient evidence that he was in a position to learn the facts to which he testified, and also presumptive evidence of the credibility of his statements. The force of his evidence could only have been broken by undoubted proof that he was a man that could not be believed under oath. Dr. James B. Merritt was a native of Canada by accident, having been born there whilst his parents were there on a visit, but had been all his life a citizen of the State of New York. He went to Canada in the spring of 1864, and practiced his profession at Windsor and Dumfries. He passed amongst the rebels in Canada as a sympathizer of the Southern cause, and was accepted by them as a good rebel, and was fully taken into their confidences. They talked freely to him, and revealed their plans to him without hesitation or reserve. His testimony, as we have seen, is very specific, and relates to facts of the greatest importance. He testified that his sympathies had always been with his government, and that his object in dissembling in his intercourse with the Canada rebels was to be able to impart information to the United States government when he deemed it of sufficient importance to justify or require its communication. That he did thus voluntarily, and without compensation, furnish valuable information to the government was shown. He had thus communicated to the Provost Marshal at Detroit the plot to burn New York City. It was also shown that he had made an effort to communicate the knowledge he had obtained, after the meeting of the 6th of April, at which John H. Surratt delivered to Thompson the despatches he had brought from Richmond, as to the parties starting from Canada to Washington to assist in the work of assassination. There was sufficient evidence of his loyalty and usefulness to the government, and his credibility was not assailed. He was a self-constituted secret service man, working without compensation, and so entitled to all the more honor.