There a dense mass of clouds lay piled along the horizon, gloomy, lowering, menacing; frowning over the calm seas as though they would soon destroy that calm, and fling forth all the fury of the winds. These clouds seemed to have started up from the sea, so sudden had been their appearance; and now, as they gathered themselves together, their forms distended, and heightened, and reached forward vast arms into the sky, striving to climb there, rolling upward voluminous cloud masses which swiftly ascended toward the zenith. So quick was the progress of these clouds that they did not seem to come from the banks below; but it was rather as though all the air suddenly condensed its moisture and made it visible in these dark masses. As yet there was no wind, and the water was as smooth as glass; but over the wide surface, as far as the eye could reach, the long swell of the ocean had changed into vast rolling undulations, to the motion of which the ship yielded, slowly ascending and descending as the waters rose and fell, while the yards creaked, and the rigging twanged to the strain upon them. Every moment the sky grew darker, and as gloom gathered above so it increased below, till all the sea spread out a smooth ebon mass. Darkness settled down, and the sun’s face was thus obscured, and a preternatural gloom gathered upon the face of nature. Overhead vast black clouds went sweeping past, covering all things, faster and faster, till at last far down in the northern sky the heavens were all obscured. But amidst all this there was as yet not a breath of wind. Far above the wind careered in a narrow current, which did not touch the surface of the sea but only bore onward the clouds. The agitation of the sky above contrasted with the stillness below made the latter not consoling but rather fearful, for this could be none other than that treacherous stillness which precedes the sudden outburst of the hurricane. For that sudden outburst all were now looking, expecting it every moment. On the side of the ship where the wind was expected the captain was standing, looking anxiously at the black clouds on the horizon, and all the crew were gazing there in sympathy with him. From that quarter the wind would burst, and it was for this assault that all the preparations had been made. [Illustration: “HE PUSHED HIM HEADLONG OVER THE RAIL AND HELPLESSLY INTO THE SEA.”] For some time Brandon had watched the collecting clouds, but at length he turned away, and seemed to find a supreme fascination in the sand-bank. He stood at the stern of the ship, looking fixedly toward the rock, his arms folded, and his thoughts all absorbed in that one thing. A low railing ran round the quarter-deck. The helmsman stood in a sheltered place which rose only two feet above the deck. The captain stood by the companion-way, looking south at the storm; the mate was near the capstan, and all were intent and absorbed in their expectation of a sudden squall.