THE RIVER. Mr. George and Rollo fell into the line of people that were pressing forward over the plank which led to the boat that the orange woman had directed them to embark in; and they soon found themselves on board. The boat was small and quite narrow. There was no saloon or enclosed apartment of any kind for the passengers, nor even an awning to shelter them from the sun or rain. There were, however, substantial settees placed around the deck, some forward and others aft. Some of these settees were on the sides of the steamer, by the railing, and there were others placed back to back in the middle. There were not seats enough for all the passengers; and thus many were obliged to stand. As the boat glided along swiftly over the water, Rollo gazed with wonder and interest at the various objects and scenes which presented themselves to view around him. The rows of dingy-looking warehouses dimly seen through the smoke along the shores of the river; the ranges of barges, lighters, and wherries lying at the margin of the water below; the bridges, stretching through the murky atmosphere across the stream, with throngs of people upon them passing incessantly to and fro; the little steamers, long and slender, and blackened by smoke, shooting swiftly in every direction over the surface of the water; and the spires and domes of the city seen on every hand beyond the nearer buildings,--attracted by turns the attention of our travellers, and excited their wonder. In a very few minutes, however, after the boat had left its first station, she seemed to be approaching another landing-place, and Rollo was very much amused to observe how the steamer was manoeuvred in coming up to the landing and making fast there. The pilot who had the command of her stood upon the wheel house on one side, and gave his orders by means of little gestures which he made with his fingers and hand. The helmsman, who stood at the wheel in the stern, watched these gestures, and regulated his steering by such of them as were meant for him. There were other gestures, however, which were meant for the engineer, who had charge of the engine. This engineer, however, could not see the gestures of the pilot, for he was down among the machinery, beneath the deck; and so there was a boy stationed on the deck, near an opening which led down to where the engineer was standing; and this boy interpreted the gestures as the pilot made them, calling out to the engineer the import of them with a very curious drawling intonation, which amused Rollo very much. Thus, when the steamer approached the land, the boy, watching the fingers of the pilot, called out, with intervals of a few seconds between each order, in a loud voice to the engineer below, as follows:---- "EASE--ER-R-R!" Then, after two or three seconds,---- "STOP--ER-R-R!" Then again,---- "BACK--ER-R-R!"