"Well, you have given me a poser, madam."

"And I will give you another. If he was the perpetrator of this crime, how comes it that he was not detected and denounced by the young people I saw going out? If, on the contrary, he was simply the witness of another man's blow—a blow which horrified him so much that it unseated his reason—how comes it that he was able to slide away from the door where he must have stood without attracting the attention and bringing down upon himself the vengeance of the guilty murderer?"

"He may be one of the noiseless kind, or, rather, may have been such before this shock unsettled his mind."

"True, but he would have been seen. Recall the position of the doorway. If Mr. Adams fell where he was struck, the assailant must have had that door directly before him. He could not have helped seeing any one standing in it."

"That is true; your observations are quite correct. But those young people were in a disordered state of mind. The condition in which they issued from the house proves this. They probably did not trouble themselves about this man. Escape was all they sought. And, you see, they did escape."

"But you will find them. A man who can locate a woman in this great city of ours with no other clew than five spangles, dropped from her gown, will certainly make this parasol tell the name of its owner."

"Ah, madam, the credit of this feat is not due to me. It was the initial stroke of a young man I propose to adopt into my home and heart; the same who brought you here to-night. Not much to look at, madam, but promising, very promising. But I doubt if even he can discover the young lady you mean, with no other aid than is given by this parasol. New York is a big place, ma'am, a big place. Do you know how Sweetwater came to find you? Through your virtues, ma'am; through your neat and methodical habits. Had you been of a careless turn of mind and not given to mending your dresses when you tore them, he might have worn his heart out in a vain search for the lady who had dropped the five spangles in Mr. Adams's study. Now luck, or, rather, your own commendable habit, was in his favor this time; but in the prospective search you mentioned, he will probably have no such assistance."

"Nor will he need it. I have unbounded faith in your genius, which, after all, is back of the skilfulness of this new pupil of yours. You will discover by some means the lady with the dove-colored plumes, and through her the young gentleman who accompanied her."

"We shall at least put our energies to work in that direction. Sweetwater may have an idea——"

"And I may have one."