Poole interrupted at this point, to impress upon his informant the extreme importance of an _exact_ description of the accident. The exact description was forthcoming and it was as disappointing as that of Mr. Lossett, the hat-lusher. The man had _lurched_ against Sir Garth—rather heavily, it is true, but he had not struck him. No, his shoulder had not struck Sir Garth in the back; it had been more of a sideways lurch against Sir Garth’s arm—perhaps at an angle of forty-five degrees, if the Inspector knew what he meant by that—between the back of the arm and the side of the arm. That was natural, because the lurch, although to a certain extent sideways—as if the ankle had turned over—had also been forwards, because of the pace at which the man was descending the steps. Mr. Wagglebow was able to be so precise because, as he had already explained, he had at that very moment been thinking to himself that if that man were not more careful he would have an accident, and sure enough he did have one—as Mr. Wagglebow was watching him. This certainly was clear evidence and the detective saw that Mr. Wagglebow would be a difficult man to shake in a witness box. As to the man’s appearance, Mr. Wagglebow was less clear—he had not been particularly interested by the individual but rather by the incident, which had so exactly borne out his warning. He believed that the man wore an overcoat—he could not say of what colour, but probably not quite black—and a bowler hat. He had appeared to be of ordinary size and appearance—a young man, undoubtedly. At the foot of the Steps, Mr. Wagglebow had turned to the right towards St. James’s Park Suspension bridge, and had seen no more of the parties concerned. Allowing for the time spent in buying the book at Hugh Rees’s Mr. Wagglebow thought that he could not have reached the Steps before 6.30.