hand, and fixed his eyes on me with a very extraordinary exaltation. We were at the top of the shabby cross-street in which he had found a shelter. A row of squalid tenements faced us, and half a dozen little Irish ragamuffins were sprawling beneath our feet, between their doorways and the gutter. "Eureka! Eureka!" he cried. "I've found it—I've found it!" And on my asking him what he had found, "Something science has groped for, for ages—the solution of the incalculable! Perhaps, too, my fortune; certainly my immortality! Quick, quick! Before it vanishes I must get at my pen." And he hurried me along to his dingy little dwelling. On the doorstep he paused. "I can't tell you now," he cried. "I must fling it down in black and white. But for heaven's sake, come to-night to the lecture, and in the first flush of apprehension I think I can knock off a statement!" To the lecture I promised to come. At the same moment I raised my eyes and beheld in the window of the Colonel's apartment the ominous visage of Professor Fargo. I had been kindled by the Colonel's ardor, but somehow I was suddenly chilled by the presence of the Professor. I feared that, be the brilliancy of my friend's sudden illumination what it might, the shock of meeting his unloved confrère under his own roof would loosen his grasp of his idea. I found a pretext for keeping him standing a moment, and observed that the Professor disappeared. The next moment the door opened and he stepped forth. He had put on his hat, I suppose, hastily; it was cocked toward one side with a jauntiness which seemed the climax of his habitual swagger. He was evidently in better spirits than when I listened to him at Excelsior Hall; but neither the Professor's smiles nor his frowns were those of an honest man. He bestowed on my companion and me one of the most expansive of the former, gave his hat a cock in the opposite direction, and was about to pass on. But suddenly bethinking himself, he paused and drew from his pocket a small yellow ticket, which he presented to me. It was admission to Excelsior Hall.
"If you can use this to-night," he said, "I think you'll something out of the common." This intimation, ac-
