SPACING
Spacing ought to be even. Paragraphs are not to be widely spaced for the sake of making breaklines. When the last line but one of a paragraph is widely spaced and the first line of the next paragraph is more than thick-spaced, extra spaces should be used between the words in the intermediate breakline. Such spaces should not exceed en quads, nor be increased if by so doing the line would be driven full out.
In general, close spacing is to be preferred; but this must be regulated proportionately to the manner in which a work is leaded.
Breaklines should consist of more than five letters, except in narrow measures. But take care that bad spacing is not thereby necessitated.
Poetical quotations, and poetry generally when in wide measure, should be spaced with en quadrats. But this must not be applied to reprints of sixteenth and seventeenth century books: in such cases a thick space only should be used.
Avoid (especially in full measures) printing at the ends of lines—a, l., ll., p. or pp., I (when a pronoun).
Capt., Dr., Esq., Mr., Rev., St., and so on, should not be separated from names; nor should initials be divided: e.g. Mr. W. E. | Gladstone; not Mr. W. | E. Gladstone.
Thin spaces before apostrophes, e.g. that’s (for ‘that is’), boy’s (for ‘boy is’), to distinguish abbreviations from the possessive case.
In Greek, Latin, and Italian, when a vowel is omitted at the end of a word (denoted by an apostrophe), put a space before the word which immediately follows.