Conover testified that he saw him in Montreal on the 6th or 7th of April, in Mr. Thompson's room, and he learned from their conversation that Surratt had just brought despatches from Richmond to Mr. Thompson. One despatch was from Mr. Benjamin, the rebel Secretary of State, and one, which Conover thought was a cipher despatch, from Jefferson Davis. Conover had previously been solicited by Thompson to participate in this work of assassination, and so was freely admitted to their secret councils. After reading these letters from Davis and Benjamin, Thompson, laying his hands on them, said, "This makes the thing all right," referring to the assent of the rebel authorities. Mr. Lincoln, Mr. Johnson, the Secretary of War, Mr. Stanton, and the Secretary of State, Mr. Seward, Judge Chase, and General Grant were to be the victims. Mr. Thompson said this would leave the government entirely without a head; that there was no provision in the Constitution of the United States by which they could elect another President if these men were removed. The long waited for authority to use funds which the rebel government had placed to the credit of Mr. Thompson having been now secured in the despatch from Mr. Benjamin, and his chief, Jefferson Davis, no time was lost in putting the ball in motion. Mr. Thompson had over six hundred thousand dollars to his credit in the Ontario Bank of Montreal, and within two days after receiving these letters, he drew on his deposit for over two hundred thousand dollars. Conover saw Surratt in Montreal from the 6th or 7th to the 9th of April, and having been admitted to their confidence by Thompson, on his receiving the despatches, was accepted by Surratt as being one of themselves, and so he was under no restraint in conversing with Conover. From the whole of his conversation Conover inferred that he was to take his part, whatever that might be, in the conspiracy. We have already learned from Merritt's testimony, that after Surratt's return to Canada on the 6th of April there was an immediate bustle amongst those in Canada who were to go to Washington to take part in the plot, and that they began to leave on the 8th. The sinews of war having been furnished, there was great eagerness, expressed and apparent, to be off for the execution of the plot, and great boasting on the part of those who went as to what they were going to do. Having set their hired assassins in motion, Thompson and his gang stood waiting in a great state of expectancy for the result. Conover testified that on the day before, or the very day of the assassination, he had a conversation with William C. Cleary about the rejoicing in the States over the surrender of Lee and the capture of Richmond. Cleary remarked that they "would put the laugh on the other side of their mouths in a day or two." "The conspiracy was at that time talked of amongst them about as freely as one would speak of the weather."