I tried to recall the words which had been spoken in the terrible dialogue I had overheard. Would they admit of any construction but the one which stared me in the face? My reason forced me to confess that they would not. I endeavoured to array the various facts which formed the chain of circumstantial evidence, and to find a flaw in it; but no, not a link was missing. There was the strange way in which our passengers had come aboard, enabling them to evade any examination of their luggage. The very name of "Flannigan" smacked of Fenianism, while "Muller" suggested nothing but Socialism and murder. Then their mysterious manner; their remark that their plans would have been ruined had they missed the ship; their fear of being observed; last, but not least, the clenching evidence in the production of the little square box with the trigger, and their grim joke about the face of the man who should let it off by mistake--could these facts lead to any conclusion other than that they were the desperate emissaries of some body, political or otherwise, and intended to sacrifice themselves, their fellow-passengers, and the ship, in one great holocaust? The whitish granules which I had seen one of them pour into the box formed no doubt a fuse or train for exploding it. I had myself heard a sound come from it which might have emanated from some delicate piece of machinery. But what did they mean by their allusion to to-night? Could it be that they contemplated putting their horrible design into execution on the very first evening of our voyage? The mere thought of it sent a cold shudder over me, and made me for a moment superior even to the agonies of sea-sickness. I have remarked that I am a physical coward. I am a moral one also. It is seldom that the two defects are united to such a degree in the one character. I have known many men who were most sensitive to bodily danger, and yet were distinguished for the independence and strength of their minds. In my own case, however, I regret to say that my quiet and retiring habits had fostered a nervous dread of doing anything remarkable, or making myself conspicuous, which exceeded, if possible, my fear of personal peril. An ordinary mortal placed under the circumstances in which I now found myself would have gone at once to the captain, confessed his fears, and put the matter into his hands. To me, however, constituted as I am, the idea was most repugnant. The thought of becoming the observed of all observers, cross-questioned by a stranger, and confronted with two desperate conspirators in the character of a denouncer, was hateful to me. Might it not by some remote possibility prove that I was mistaken? What would be my feelings if there should turn out to be no grounds for my accusation? No, I would procrastinate; I would keep my eye on the two desperadoes and dog them at every turn. Anything was better than the possibility of being wrong.