THE SEMICOLON
The semicolon is used to denote a degree of separation greater than that indicated by the comma, but less than that indicated by the colon. It prevents the repet.i.tion of the comma and keeps apart the more important members of the sentence. The semicolon is generally used in long sentences, but may sometimes be properly used in short ones.
_Rules for the Use of the Semicolon_
1. When the members of a compound sentence are complex or contain commas.
Franklin, like many others, was a printer; but, unlike the others, he was student, statesman, and publicist as well.
With ten per cent of this flour the bread acquired a slight flavor of rye; fifteen per cent gave it a dark color; a further addition made the baked crumb very hard.
The meeting was composed of representatives from the following districts: Newton, 4 delegates, 2 subst.i.tutes; Dorchester, 6 delegates, 3 subst.i.tutes; Quincy, 8 delegates, 4 subst.i.tutes; Brookline, 10 delegates, 5 subst.i.tutes.
2. When the members of a compound sentence contain statements distinct, but not sufficiently distinct to be thrown into separate sentences.
Sit thou a patient looker-on; Judge not the play before the play be done; Her plot has many changes; every day Speaks a new scene. The last act crowns the play.
3. When each of the members of a compound sentence makes a distinct statement and has some dependence on statements in the other member or members of the sentence.
Wisdom hath builded her house; she hath hewn out her seven pillars; she hath killed her beasts; she hath mingled her wine; she hath furnished her table.
Each member of this sentence is nearly complete. It is not quite a full and definite statement, but it is much more than a mere amplification such as we might get by leaving out _she hath_ every time after the first. In the former case we should use periods. In the latter we should use commas.
4. A comma is ordinarily used between the clauses of a compound sentence that are connected by a simple conjunction, but a semicolon may be used between clauses connected by conjunctive adverbs. Compare the following examples:
The play was neither edifying nor interesting to him, and he decided to change his plans.
The play was neither edifying nor interesting to him; therefore he decided to change his plans.
5. To indicate the chapter references in scriptural citations.
Matt. i: 5, 7, 9; v: 1-10; xiv: 3, 8, 27.
The semicolon should always be put outside quotation marks unless it forms a part of the quotation itself.
"Take care of the cents and the dollars will take care of themselves"; a very wise old saying.
THE COLON
The colon marks the place of transition in a long sentence consisting of many members and involving a logical turn of the thought. Both the colon and semicolon are much less used now than formerly. The present tendency is toward short, simple, clear sentences, with consequent little punctuation, and that of the open style. Such sentences need little or no aid to tell their story.
_Rules for the Use of the Colon_
1. Before _as_, _viz._, _that is_, _namely_, etc., when these words introduce a series of particular terms in apposition with a general term.
The American flag has three colors: namely, red, white, and blue.
2. Between two members of a sentence when one or both are made up of two or more clauses divided by semicolons.
The Englishman was calm and self-possessed; his antagonist impulsive and self-confident: the Englishman was the product of a volunteer army of professional soldiers; his antagonist was the product of a drafted army of unwilling conscripts.
3. Before particular elements in a definite statement.
Bad: He asked what caused the accident?
Right: He asked, "What caused the accident?"
Napoleon said to his army at the battle of the Pyramids: "Soldiers, forty centuries are looking down upon you."
The duties of the superintendent are grouped under three heads: first, etc.
4. Before formal quotations.
Write a short essay on the following topic: "What is wrong with our industrial system?"
When the formal introduction is brief, a comma may be used.
St. Paul said, "Bear ye one another"s burdens."
5. After the formal salutatory phrase at the opening of a letter.
My dear Sir:
When the letter is informal use a comma.
Dear John,
6. Between the chapter and verse in scriptural references.
John xix: 22.
7. Between the city of publication and the name of the publisher in literary references.
"The Practice of Typography." New York: Oswald Publishing Company.
The colon has been similarly employed in the imprints on the t.i.tle pages of books.
New York: Harper & Brothers, 1880.