This second farewell was now about to be given. The gentlemen on the pier took off their hats, and, waving them in the air, shouted hurrah in concert, three times, with great energy. The company of passengers on board the ship then responded, by shouting and waving their hats in return. The ladies, both on the pier and in the ship, performed their part in this ceremony by waving their handkerchiefs and clapping their hands. By this time the steamer, which had been rapidly increasing the speed of its motion all the while, was now getting quite out into the stream, and was turning rapidly down the river. This change in the direction in which the steamer was going carried the pier and all the people that were upon it entirely out of the children's view and they saw themselves gliding rapidly along the shore of the river, which was formed of a long line of piers, with forests of masts surmounting them, and long ranges of stores and warehouses beyond. Nearer to the steamer, on the water of the river, and on either hand, were to be seen sloops, ships, ferry boats, scows, and every other species of water craft, gliding to and fro in all directions. While gazing with great interest on this scene, as the steamer moved along, Jane was suddenly startled and terrified at the sound of a heavy gun, which seemed to be fired close to her ear. It was soon evident that the gun had been fired from on board the steamer, for a great puff of smoke rose up into the air from the bows of the vessel, and slowly floated away. Immediately afterward another gun was fired, louder than the first. I have said that there were three farewells. The first is that of the individual passengers to their individual friends. The second is that of the whole company of passengers to the company of spectators on the pier. The third is the ship's farewell to the city. Of course, for a ship to speak to a city, a very loud voice is required. So they provide her with a gun. In fact, a great steamer proceeding to sea may be considered as, in some respects, like a mighty animal. The engine is its heart; the paddle wheels are its limbs; the guns are its voice; the captain is its head; and, finally, there is a man always stationed on the lookout in the extreme forward part of the ship, who serves the monster for eyes. Jane was quite terrified at the sound of the guns. "O Rollo!" exclaimed she, "I wish they would not fire any more of those dreadful guns." "I don't think they will fire any more," said Rollo. "In fact, I am sure they will not, for they have fired two now, and they never fire more than two."