A moment sufficed for his signal call, which brought Mr. Lupton instantly to the spot. The mutual recognition between Jerry and himself was but the process of a moment; and, while the latter strove all in his power to secure the former without violence, Jerry as desperately and madly aimed to bury in his bosom a long knife, which it was now discovered he held opened in his hand. The combined exertions of Mr. Lupton and Colin were, however, too much for him, and would eventually have achieved his capture, had not Jerry, with a degree of reckless desperation and agility, which struck both his assailants with momentary horror and astonishment, leaped the wall of the bridge on finding himself at the point of being taken, and casting his knife and coat from him, in an instant plunged headlong from about the centre of one of the arches into the Thames. It was a wild leap, an insane flight into the arms of death. There was no splash in the water, but a dull, leaden sound came up, as when a heavy weight is plunged into a deep gulf. It was as if the water made no aperture, and threw up no spray; but gulfed him sullenly, as though such prey was not worth rejoicing over. Father and son seemed petrified into mere statues; not more from what they had seen than--in the case of the latter, at least--he had heard from the lips of the suicide. For that a suicide he was who could doubt? Who might take that giddy leap, and live? During a brief space they dared not even cast their eyes down the fearful height; the deed had paralysed them. But, as Colin's eyes were fixed intensely on the waves, a something living seemed to struggle through and across a ripple of light. Could it indeed be the old man? He dared not hope, and could say nothing. Boats were subsequently got out, the river was traversed, and both banks were searched, in hopes of finding him; but all the efforts of the boatmen proved ineffectual.