Proofs of the pages being furnished to the proof-reader, he first of all compares them with the author's last galley proof to see that nothing has been omitted (frequently lines fall off the ends of galleys), that they are in due sequence and "join up," and that the author's last corrections have been made. He then sees to the pagination, the running heads at top of each page, and sees that the foot-notes have been inserted in the pages where they belong and verifies the reference marks. The author will probably have used the * [symbol: dagger][symbol: double-dagger] § and they will have been so set up, as they appeared on each page of the original manuscript. But when in type and made up into pages they will probably fall differently, the note bearing the § mark may come on the following page and of course must be altered to an *, a corresponding change being made in the text. A much better plan is to number foot-notes 1, 2, 3 and so on, when no alteration on making-up will be required.
The proof-reader must also look after the "widows" and other matters before mentioned. If the book is set in linotype, the make-up will have been unable to make these changes. He will simply allow the proper space and the changes required will be marked by the proof-reader and a number of pages corrected at a time. This is a point of economy.
All corrections having been made and revised, proofs are submitted to the author for his final approval. The author may find it advisable to make alterations even after his book is made up into pages, necessitating further revises; but everything finally being in order, he gives the order to print or to electrotype.
If the pages are to be electrotyped or made into plates, they are "locked up" in an iron frame called a "chase," two or four together, and proofs are given to the proof-reader for a final reading.
If the book is to be printed from the type, the pages are "imposed" in sheets of eight, sixteen, or thirty-two, so arranged that the folios will be in order when the sheet is folded up. They now make what is called a "form," and a proof of this--known as the "stone proof"--is taken for final reading.
The proof-reader now reads the work all through, looking carefully to the spelling, punctuation, and grammar, as in reading "first proof," and more especially looking out for bad or imperfect letters. If many corrections have been made, the type is very apt to be broken and the spacing between words to become irregular. All imperfect letters must be replaced and bad spacing rectified. Then again, commas, hyphens, periods, and thin letters, such as _l_, _f_, or _t_, are apt to slip out of place at the ends of lines. And here a serious source of error may be mentioned which can be found out only by reading the whole page over. In type set on the linotype machine every line is one solid piece of metal. Any correction to be made involves resetting the whole line. Now the compositor in inserting the new line is very apt to take out a line _beginning with the same word_, replacing it with the new one, thus making a very serious blunder, and of course the proof-reader or author who sees the next proof has no intimation that the wrong line has been tampered with. On reading the page over, however, it will be noticed that something is wrong, previous proofs can be referred to, and the mistake rectified.