When a word should form a compound with another, it is denoted as in No. 7. When a letter has been omitted, a caret is put at the place of omission, and the letter marked as No. 8. Where a line is too widely spaced, the mark No. 9 must be placed between the words and also in the margin. Where a new paragraph is required, a quadrangle is drawn in the margin, and a caret placed at the beginning of the sentence. (See No. 10.) No. 11 shows the way in which the apostrophe, inverted commas, the star and other references, and superior letters and figures, are marked. Where two words are transposed, a line is drawn over one word and below the other, and the mark No. 12 placed in the margin; but where several words require to be transposed, their right order is signified by a figure placed over each word, and the mark No. 12 in the margin. Where words have been struck out that have afterward been approved of, dots should be marked under them, and _stet_ written in the margin. (See No. 13.) Where a space sticks up between two words, a horizontal line is drawn under it, and the mark No. 14 placed opposite, in the margin. Where several words have been left out, they are transcribed at the bottom of the page, and a line drawn from the place of omission to the written words, (see No. 15;) but if the omitted matter is too extensive to be copied at the foot of the page, _Out, see copy_, is written in the margin, and the missing lines are enclosed between brackets, and the word _Out_ is inserted in the margin of the copy. Where letters stand crooked, they are noted by a line, (see No. 16;) but, where a page hangs, lines are drawn across the entire part affected. When a smaller or larger letter, of a different fount, is improperly introduced into the page, it is noted by the mark No. 17, which signifies wrong fount. If a paragraph is improperly made, a line is drawn from the broken-off matter to the next paragraph, and _No ¶_ written in the margin. (See No. 18.) Where a word has been left out or is to be added, a caret must be made in the place where it should come in, and the word written in the margin. (See No. 19.) Where a faulty letter appears, it is denoted by making a cross under it, and placing a similar mark in the margin, (see No. 20;) though some prefer to draw a perpendicular line through it, as in the case of a wrong letter. Where a word has been accidentally separated by a space, it is marked as in No. 21. TABLE OF SIGNATURES. On the two following pages will be found a complete list of signatures for books in octavo, twelves and eighteens, sixteens, and twenty-fours. The 24mo signatures in this table are arranged to bring the second signature on either the 9th or 17th page of the form. If the sheet is to be folded as an 8vo and 16mo, the figure signatures may be used; but if as two 12mos, the letter signatures will be used.