XIV. NIAGARA The hours passed, and the situation did not change. The steersman returned on deck, and the captain, descending, watched the movement of the engines. Even when our speed increased, these engines continued working without noise, and with remarkable smoothness. There was never one of those inevitable breaks, with which in most motors the pistons sometimes miss a stroke. I concluded that the “Terror,” in each of its transformations must be worked by rotary engines. But I could not assure myself of this. For the rest, our direction did not change. Always we headed toward the northeast end of