Drive out.—To space widely.

Duck’s-bill.—A tongue cut in a piece of stout paper and pasted on the tympan at the bottom of the tympan-sheet, to support the paper when laid on the tympan.

Duodecimo, or 12mo.—Twelve pages to a form.

Em.—The square of the body of a type.

En.—Half the dimensions of the preceding.

Even page.—The 2d, 4th, 6th, or any even-numbered page of a book.

Fat.—Poetry and leaded matter.

Fat face, or Fat letter.—Broad stemmed letter.

Father of the chapel.—President or chairman of a composing-room or press-room chosen by the hands.

Feed guide.—An implement attached to a press to aid in correct feeding.