"No," answered his uncle, "the other is the impression cylinder. Those two big cylinders work together like the rollers of a clothes wringer. That broad ribbon of paper, just as wide as our newspaper, goes between the two cylinders as clothes pass between the rollers of the wringer. The impression cylinder rolls the paper hard against the inked type cylinder and prints one side of the paper. If one of the rollers of a clothes wringer had ink marks on it they would be printed on the clothes as they went between the rollers, wouldn't they? That is the way this press works. Can you see the paper as it goes on?" "Yes, and there are two more cylinders like the other pair!" cried Jimmie. "That's right," answered his uncle. "I think you can see that when the paper passes between the second pair the other side of the paper is printed. Just get your eye on the paper as it is unwound from that enormous spool, or web, and watch as far as you can. The white paper in that web is a strip four miles long and as wide as two pages of the _Record_. The type cylinders turn so fast you can't see what is on them, but there is enough type to print four pages of the newspaper on each cylinder." "Why do they need such a quantity of small black rollers?" asked Jimmie's mother. "Those small rollers you are watching are inking cylinders," answered her brother. "They are very important in the printing. See them keep inking the type cylinder, rolling against the part which has just done some printing as it turns around to print again. I don't believe you can see the ink fountain which covers them with ink so that they in turn can cover the type, but it is there, working all the time." "It is easy enough to see why it is called a rotary press," said Mrs. Granger. "Cylinders and cylinders and cylinders rolling round and round and round." "Do you see why it is called a perfecting press, Jimmie?" asked Uncle Francis. "No, I don't believe I do. Do you, mother?" he asked. "Why, yes, I think so. Look at the other end of the press and see those newspapers fairly pouring out all cut from the web, folded, and even counted. If they are completed in every respect so that there is nothing for anybody to do but sell them, I should think the press might be called a perfecting press." "Of course," assented Jimmie, "that's the reason. Why didn't I see it?" [Illustration: CURVED STEREOTYPE PLATE] "Shall we go back to the office now where there is less noise and see what to-day's paper says?" asked Uncle Francis after giving Jimmie a good long time to watch the press. "There is one thing more I should like to have you see, but it is too late for you to do so to-day. Give one look at the type cylinder before you leave. Can you see that the type is not in little pieces of one letter each, but is in solid pieces of metal curved to fit the cylinder?" On the way back to the office Uncle Francis showed Jimmie a stereotype plate which he could study at close range.