"And yet," observed the Judge of Instruction, "we do not know what the note-case carried off by the assassin contained. But," he added, "the hypothesis of robbery seems to me to be utterly routed by the fact that, while Rochdale stripped the dead man of his watch, he left a ring, which was much more valuable, on his finger. From this I conclude that he took the watch merely as a precaution to throw the police off the scent. My supposition is that the man killed M. Cornélis for revenge." Then the former Judge of Instruction gave me some singular examples of the resentment cherished against medical experts employed in legal cases, Procureurs of the Republic, and Presidents of Assize. His theory was, that in the course of his practice at the bar my father might have excited resentment of a fierce and implacable kind; for he had won many suits of importance, and no doubt had made enemies of those against whom he employed his great powers. Supposing one of those persons, being ruined by the result, had attributed that ruin to my father, there would be an explanation of all the apparatus of this deadly vengeance. M. Massol begged me to observe that the assassin, whether he were a foreigner or not, was known in Paris. Why, if this were not so, should the man have so carefully avoided being seen in the street? He had been traced out during his first stay in Paris, when he bought the wig and the beard, and that time he put up at a small hotel in the Rue d'Aboukir under the name of Rochdale, and invariably went out in a cab. "Observe also," said the Judge, "that he kept his room on the day before the murder, and on the morning of the actual day. He breakfasted in his apartment, having breakfasted and dined there the day before. But, when he was in London, and when he lived at the hotel to which your father addressed his first letters, he came and went without any precautions." And this was all. The addresses of three hotels--such were the meagre particulars that formed the whole of the information to which I listened with passionate eagerness; the magistrate had no more to tell me. He had small, twinkling, very light eyes, and his smooth face wore an expression of extreme keenness. His language was measured, his general demeanour was cold, obliging, and mild, he was always closely shaven, and in him one recognised at once the well-balanced and methodical mind which had given him great professional weight. He acknowledged that he had been unable to discover anything, even after a close analysis of the whole existing situation of my father, as well as his past.