Uniformity in spacing is, unquestionably, a most important part of a compositor’s occupation; this requires both care and judgment, and, therefore, cannot be too strongly impressed upon the mind of the beginner. Close spacing is as unworkmanlike as wide spacing, and neither ought to be permitted except in very narrow measures; and, frequently, even then with care it might partly be prevented. What is commonly called the thick space is the proper separator between words; though this rule cannot always be adhered to in narrow measures when large type is used. It is not sufficient merely to have a line here and there uniformly spaced: a careful compositor will give every page that uniformity of appearance which is a chief excellency. The beginner should remember that it is better to do little, and do that little _well_, than to put together a great number of letters without any regard to accuracy and uniformity. Where a line is evenly spaced, and yet requires justification, the additional space should be put between those words in the line where it will be least observable: viz. a d and an h, being tall, perpendicular letters, will admit an increase of space between them, but not more than a middle and thin space to a thick-spaced line; and an additional space may be placed after a kerned letter, the beak of which may bear upon the top of an ascending letter,—as the f followed by h, &c. The same rule should be observed where it is necessary to reduce the spacing of a line, less space being required after a sloping letter than after a perpendicular one. The comma requires only a thick space, but the other points should have a hair space before and an en quadrate after them, except the full-point, which should have an em quadrate, as terminating a sentence. Should it be necessary to reduce the spacing generally, the spaces after the points must be altered in the same proportion. Spaces are cast to such regular gradations that the compositor can urge no reasonable excuse either for bad justification or improper spacing. In matter to be stereotyped, a hair space should be placed after the letter f and other kerned letters when they stand at the end of the line. JUSTIFYING. Accurate justification is absolutely essential, as the letters will be warped sidewise in a loose line, making it impossible to get a fair impression from the type. Besides, the letters are liable to be drawn out by the suction of the rollers, to the detriment of the form and the press. The instructor of an apprentice should occasionally pass his finger along the side of matter set by him; and if the lines should not prove evenly justified, they should be put into the composing-stick again and properly corrected. HEAD-LINES. Head-lines are generally set in small capitals of the same fount, or in Italic, and sometimes in capitals. Italic capitals of letter somewhat smaller than the body of the work, with folios of a proportionate size, have a neat appearance. NOTES.