There was a faint, damp puff of wind in their faces. Then it passed over them and gradually the shore line was blotted from sight. Around them fell a gray blanket of mist. Twenty feet away in any direction the eye lost itself in the fog. _The Dart_ slowed down and the triumphant whirr of the screw died away to a timid thudding. The engine clicked feebly and the rods at the sides of the cylinders moved up and down as though grown suddenly weary.