"Constable Nightingale has since given an explanation of this discrepancy by the admission that he must have made a mistake in supposing that he received from Constable Wigg the information of the route the man took when he scurried off; but we submit that this explanation is not entirely satisfactory. "Another thing. Constable Nightingale states that he was engaged in the search for an hour, and that during the whole of that time he did not meet a single person on the road. How is that statement to be received? He was hunting in some of the busiest thoroughfares in London, and it bears the form of an accusation that he did not for a whole hour observe one policeman on his beat. He was on his, he declares, at the time he heard Constable Wigg's whistle. Constable Wigg was on his beat, according to his own declaration, when he blew it. Were they the only two constables in a thronged locality who were faithfully performing their duty? Doubtless the other constables on duty would indignantly repudiate the allegation, but Constable Nightingale distinctly implies as much. We do not wish to be hard on this officer, who bears a good character in the force. His movements and proceedings between the hours of twelve and two on the night of the 16th may have been innocent enough, or, if not quite blameless, excusable enough on such a tempestuous night, but we unhesitatingly say that his evidence is suspicious, and that we are not inclined to accept it as veracious. "Still another thing. We have ascertained from persons acquainted with Constable Nightingale, that he was very proud of his silver watch, which he was lucky enough to win in a raffle, and that he was in the habit of boasting that it never stopped, and never lost or gained a minute. It is singular, therefore, that on this eventful night it should have stopped for the first time, and at a time when it might be most important to fix the occurrence of events to a minute. Perhaps Constable Nightingale's watch stopped in sympathy with the stoppage of Mrs. Middlemore's kitchen clock. "We are anxious to do justice to the parties, and we hasten to say that at our request they have allowed a competent watchmaker to examine Constable Nightingale's watch and Mrs. Middlemore's clock; but this watchmaker reports that they are in perfect order, and that he can find no reason why they should both have stopped almost at the same moment. "If any of our readers consider that we are straining too hard on trifles, we reply that the importance of so-called trifles cannot be over-estimated. The world's greatest poet has said, 'Trifles light as air are in their confirmation strong as proofs of Holy Writ.'" CHAPTER VIII. A STARTLING PHASE IN THE MYSTERY.