“Well, I think we will be able to do him a very great service by attending to a little matter in which he is interested, colonel. Are you disengaged, and willing to accompany me?” X. THE WAY THE MONEY WENT. I looked intently at Nighthawk. He was evidently very much in earnest. “I am entirely disengaged, and perfectly willing to accompany you,” I said; “but where?” Nighthawk smiled. “You know I am a mysterious person, colonel, both by character and profession. I fear the habit is growing on me, in spite of every exertion I make. I predict I will end by burning my coat, for fear it will tell some of my secrets.” “Well,” I said with a smile, “keep your secret then, and lead the way. I am ready to go far to oblige Mohun in any thing.” “I thank you, colonel, from my heart. You have only to follow me.” And Nighthawk set out at a rapid pace, through the grounds of the capitol, toward the lower part of the city. There was something as singular about the walk of my companion, as about his appearance. He went at a great pace, but his progress was entirely noiseless. You would have said that he was skimming along upon invisible wings. In an incredibly short time we had reached a street below the capitol, and my companion, who had walked straight on without turning his head to the right or the left, all at once paused before a tall and dingy-looking house, which would have appeared completely uninhabited, except for a bright red light which shone through a circular opening in the door. At this door Nighthawk gave a single tap. The glass covering the circular space glided back, and a face reconnoitred. My companion uttered two words; and the door opened, giving access to a stairs, which we ascended, the janitor having already disappeared. At the head of the stairs was a door which Nighthawk opened, and we found ourselves in an apartment where a dozen persons were playing faro. Upon these Nighthawk threw a rapid glance--some one whom he appeared to be seeking, was evidently not among the players. Another moment he returned through the door, I following, and we ascended a second flight of stairs, at the top of which was a second door. Here another janitor barred the way, but my companion again uttered some low words,--the door opened; a magnificently lit apartment, with a buffet of liquors, and every edible, presented itself before us; and in the midst of a dozen personages, who were playing furiously, I recognized--Mr. Blocque, Mr. Croker, Mr. Torpedo, and Colonel Desperade.