Up over our heads, in the room of the type-setters, are a hundred columns, or more, of articles already set--enough to make two or three newspapers. The Foreman of the type-setters makes copies of these on narrow strips of paper with a hand-press, and sends them down to the Editor-in-Chief. These copies on narrow strips of paper, are called "proofs," because, when they are read over, the person reading them can see if the type has been set correctly--can prove the correctness or incorrectness of the type-setting. [Illustration: TAKING "PROOFS."] The Editor-in-Chief runs rapidly through these proofs, and marks, against here and there one, "_Must_," which means that it "must" be published in to-morrow's paper. Against other articles he marks, "_Desirable_," which means that the articles are "desirable" to be used, if there is room for them. Many of the articles he makes no mark against, because they can wait, perhaps a week, or a month. By having a great many articles in type all the time, they never lack--Jonathan will be glad to know--for something to put into the paper. Jonathan might well take the hint, and write his compositions well in advance. Against some of the articles, the word "_Reference_" is written, which indicates that when the article is published an editorial article or note with "reference" to it must also be published. Before the Editor-in-Chief is through, perhaps he marks against one or two articles the word "_Kill_," which means that the article is, after all, not wanted in the paper, and that the type of it may be taken apart--the type-setters say "distributed"--without being printed. [Illustration: IN THE STEREOTYPERS' ROOM.] When the Editor-in-Chief is through with the proofs, perhaps he has a consultation with the Managing Editor--the first editor in authority after him--about some plans for to-night's paper, or for to-morrow, or for next week. Perhaps, then, he summons in the Night Editor. The Night Editor is the man who stays until almost morning, who overlooks everything that goes into the paper, and who puts everything in according to the orders of the Editor-in-Chief, or of the Managing Editor. Well, he tells the Night Editor how he wants to-morrow's paper made, what articles to make the longest, and what ones to put in the most important places in the paper. Then, perhaps, the City Editor comes knocking at the door, and enters, and he and the Editor-in-Chief talk over some stirring piece of city news, and decide what to say in the editorial columns about it.