the Cross in the Cathedral at Antwerp if there was sufficient circumst'ntial evidence to indicate that he had been away on diplomatic business, for instance, at the time it was painted. And yet, my dear fellow, such a conclusion would be prepost'rous. Even if the inf'rences to the contr'ry were so irresistible as to be legally overpowering, the picture itself would prove conclusively that Rubens did paint it. Why? For the simple reason, d' ye see, that no one but Rubens could have painted it. It bears the indelible imprint of his personality and genius—and his alone."
"I'm not an æsthetician," Markham reminded him, a trifle testily. "I'm merely a practical lawyer, and when it comes to determining the authorship of a crime, I prefer tangible evidence to metaphysical hypotheses."
"Your pref'rence, my dear fellow," Vance returned blandly, "will inev'tably involve you in all manner of embarrassing errors."
He slowly lit another cigarette, and blew a wreath of smoke toward the ceiling.
"Consider, for example, your conclusions in the present murder case," he went on, in his emotionless drawl. "You are laboring under the grave misconception that you know the person who prob'bly killed the unspeakable Benson. You admitted as much to the Major; and you told him you had nearly enough evidence to ask for an indictment. No doubt, you do possess a number of what the learned Solons of to-day regard as convincing clues. But the truth is, don't y' know, you haven't your eye on the guilty
