"What I'd advise, sir, is this," said Ben: "Let us get as close up to where the cries come from as we can without being seen, and then let us hail the vessel, or raft, or whatever it may be, in gruff voices, and say that if they don't knock off their murdering work, and let the people they are harming go free, we will blow them all up into the sky. If they don't heed us, we'll shriek and cry, and make all sorts of noises, as if a thousand demons were about to board them; and, as people who are about any bad work are certain to have bad consciences, they'll fancy that the noises are ten times louder and worse than they are.  If that does not succeed, we must try some other dodge; we shall hit off something or other, I daresay."