"I'm game, sir. What of it?"
"Let me see. It is now four o'clock. If you can get hold of all these people in time I think I shall be ready for the final scene to-night—say, at nine. You know how to arrange it. Have them all present at my laboratory at nine, and I promise we shall have a story that will get into the morning papers with leaded type on the front page."
"Now, Walter," he added, as we hurried down to the taxicab again, "I want you to drop off at the Department of Health with this card to the commissioner. I believe you know Dr. Leslie. Well, ask him if he knows anything about this Bridget Fallon. I will go on up-town to the laboratory and get my apparatus ready. You needn't come up till nine, old fellow, for I shall be busy till then, but be sure when you come that you bring
