Every one knows that the Potomac empties itself into the Chesapeake bay. The Potomac is between ninety and a hundred miles long, in its tortuous route from Washington to the bay. At its mouth are many inlets. Each one of these was known to Rupert and the two negro sailors. It was in the most retired estuary that the _Mary Jane_ cast anchor on the evening of the fifth of June. At her normal rate of speed she lay within two and a half hours run of the Capital. At nine, at black of night, she started for Washington. Her deck-log registered thirty-six knots an hour. She hugged the shore, where she laid for safe passage, until she modestly crept to an anchorage near a city wharf. Then the Colonel went ashore with his two black men and two Swedes, to reconnoitre the town. He always took with him a preparation of chloroform and another drug, which, for the sake of public safety, we will not mention. This was compounded for him in Chicago, by a chemist formerly in the employ of Anarchists. This preparation was warranted to "make a man who smelled it lose consciousness in less time that it takes to say Herr Most." When Colonel Oddminton was last in Washington a casual smoking-room acquaintance remarked, eying him with the gaze of a professional physiognomist: "If you'd shave off your chin, and keep your hat on, you'd be the very picture of Senator X----." Now Senator X----, through a revolution of the political wheel, had become Secretary of State. That casual remark had penetrated into the imagination of the Colonel. He tried to shake the impression off. Flattered by this suggestion--no one had ever made it before--he bought photographs of the Senator, all he could find, and studied them diligently. For days he haunted the Senate chamber and learned the personnel of the Senator by heart. [This, it will be remembered, was in the last administration.] Then was born the thought, Why not make capital out of this resemblance which art could easily magnify? The Senator was a millionaire. There might be money in it. But this seemed, after all, rather impracticable and rather commonplace. The Colonel was no sneak thief. He had broader elements than that. The man, but not the blood, was ignorant that his grandfather's great-grandfather was hung for piracy in England. It would be impossible to state when the stupendous plot, which he finally executed, shaped itself in his subtile brain. This idea startled him, haunted him, conquered him; why not kidnap the President of the United States, demand a ransom and throw suspicion, for a time at least, upon the wily politician? His thoughts now worked only in that conduit. Jacobi said that the greater a man's ability to act for distant ends, the stronger his mind. The Colonel silently plotted for months. We see where it had led him. Having studiously perfected himself in the role of Secretary, which he was prepared to play at a moment's notice, the Colonel spent the remainder