a good thing I came to the rescue. Such chaps are about as safe as rattlesnakes."
He shook his head in a mock discouragement.
"Really, y' know, Markham, old thing," he added, "you should study the cranial indications of your fellow man more carefully—vultus est index animi. Did you, by any chance, note the gentleman's wide rectangular forehead, his irregular eyebrows, and pale luminous eyes, and his outstanding ears with their thin upper rims, their pointed tragi and split lobes? . . . A clever devil, this Ambroise—but a moral imbecile. Beware of those pseudo-pyriform faces, Markham; leave their Apollonian Greek suggestiveness to misunderstood women."
"I wonder what he really knows?" grumbled Markham irritably.
"Oh, he knows something—rest assured of that! And if only we knew it, too, we'd be considerably further along in the investigation. Furthermore, the information he is hiding is somewhat unpleasantly connected with himself. His euphoria is a bit shaken. He frightfully overdid the grand manner; his valedict'ry fulmination was the true expression of his feeling toward us."
"Yes," agreed Markham. "That question about last night acted like a petard. What prompted you to suggest my asking it?"
"A number of things—his gratuitous and obviously mendacious statement that he had just read of the murder; his wholly insincere homily on the sacredness of professional confidences; the cautious and Pecksniffian confession of his fatherly regard for the girl; his elaborate struggle to remember when
