There are five principal uses of the comma:

91a. A comma is used between clauses joined by but, for, and, or any other coördinating conjunction.

Exception.—If the clauses are short and closely linked in thought, the comma may be omitted (She came and she was gone in a moment. McCoy talked and the rest of us listened.) If the clauses are long and complicated, a semicolon may be used (See 92b).

Note.—No comma should follow the conjunction. Wrong: He was enthusiastic but, inexperienced. Wrong: They went before the committee but, not one of them would answer a question.

b. Do not use a comma between independent clauses which are not joined by a conjunction. Use a period or a semicolon. (This error, the "comma splice," betrays ignorance of what constitutes a unified sentence. See 18.)

Exception.—Short coördinate clauses which are not joined by conjunctions, but which are parallel in structure and leave a unified impression, may be joined by commas.

c. An adverbial clause which precedes a main clause is usually set off by a comma.

When long:

When ending in words that link themselves with words in the main clause:

When not closely connected with the main clause in meaning:

Note.—The comma is usually omitted when the adverbial clause follows the main clause.

d. Restrictive clauses should not be set off by commas; non-restrictive clauses should be set off by commas. (A restrictive clause is one inseparably connected with the noun or pronoun it modifies; to omit it would change the thought of the main clause. A non-restrictive clause is less vitally connected with the noun or pronoun; to omit it would not affect the thought of the main clause.)

The rule stated above for clauses applies also to phrases.

e. Slightly parenthetical elements are set off by commas:

Direct address or explanation:

Mild interjections:

Absolute phrases:

Geographical names which explain other names and dates which explain other dates:

Words in apposition:

Note.—When the parenthetical element occurs in the middle of a sentence, "set off by commas" means punctuate before and after.

f. Consecutive adjectives that modify the same noun are separated from each other by commas. If, however, the last adjective is closely linked in meaning with the noun, no comma is used before it.

Note.—The commas in a series of adjectives are used to separate the adjectives from each other. No comma should intervene between the final adjective and the noun. Wrong: He was only a frail, unarmed, frightened, youngster. Right: He was only a frail, unarmed, frightened youngster.

g. Words or phrases in series are separated by commas.

When the series takes the form a, b, and c, a comma precedes the and.

h. A comma should follow an expression like he said which introduces a short quotation. (For longer or more formal quotations use a colon.)

But for indirect quotations, a caution is necessary. Do not place a comma between a verb and a that or how clause which the verb introduces.

i. A comma is used to separate parts of a sentence which might erroneously be read together.

j. Do not use superfluous commas:

1. To mark a trivial pause:

Slight pauses in a sentence are taken care of by the good sense of the reader. Do not sprinkle commas when the sentence is moving along freely with no complication in the thought.

2. To separate an adjective from its noun:

3. Before the first word or phrase in a series unless the comma would be employed if the word or phrase stood alone:

Exercise:

  1. Before the workmen finished eating the tunnel caved in. Three Italian laborers were crushed, the others with the foreman escaped.
  2. Sneed the new chairman proposed that the convention should meet at Cheyenne Wyoming. The suggestion however was according to reports not adopted.
  3. He had a pen and an ink bottle was in the cupboard. By washing poor widows can earn but scant living.
  4. Saunders asked, how I liked the Overland car as compared with the Chalmers, the Hudson and the Buick. I started to reply but at that moment we were interrupted.
  5. People, who steal watermelons, say the stolen melons are sweetest. Farragut who was born in Tennessee was the North's ablest naval commander. The developer is a chemical, which reduces the silver salt.
The Semicolon

The semicolon represents a division in thought somewhat greater than that represented by a comma, and somewhat smaller than that represented by a period. It may represent grammatical separation and logical connection at the same time; that is, it may indicate that two statements are separate units in grammar, and are yet to be taken together to form a larger unit of logic or thought.

92a. The semicolon is used between coördinate clauses which are not joined by a conjunction. (For a possible exception see 91b.).

Note.—Very often the writer may choose freely between the semicolon and the period; in such instances the use of the semicolon implies greater logical unity between the clauses than the use of the period would show. Unless this logical unity is distinct, the period is to be preferred.

b. The semicolon is sometimes used between coördinate clauses which are joined by a conjunction if the clauses are long, or if the clauses have commas within themselves, or if obscurity would result were the semicolon not used. (Otherwise, see 91a.)

c. The semicolon is used between coördinate clauses which are joined by a formal conjunctive adverb (hence, thus, then, therefore, accordingly, consequently, besides, still, nevertheless, or the like).

Note 1.—If a simple conjunction like and is used in the sentences above, a comma will suffice. But a comma is not sufficient before a conjunctive adverb like therefore. Conjunctive adverbs may be clearly distinguished from simple conjunctions (See 91a). They cannot always be easily distinguished from subordinating conjunctions (see 90b, Note), but the distinction, when it can be made with certainty, is an aid to clear thinking.

Note 2.—Good usage sometimes permits a comma to be used before a conjunctive adverb in short sentences where the break in the thought is not formal or emphatic. For instance, when the conjunctive adverb so is used as a formal or emphatic connective, a semicolon is desirable (I won't go; so that's settled). But in the sentence, "I was excited, so I missed the target", a comma is sufficient. For the use of so is here informal, and probably expresses degree as well as result. (Compare "I was so excited that I missed the target").

d. The semicolon is not used before quotations, or after the "Dear Sir" in letters. Use a comma or a colon. (See 91h, 93a, and 87b.)

Exercise:

  1. The eggs tasted musty, they were cold storage eggs.
  2. You should have seen that old, formally kept house, you should have sat in that stuffy and immaculate parlor.
  3. I objected to the plan however since he insisted upon it I yielded.
  4. I suppose I must go if I don't he will be anxious.
  5. Although the note is due on March 19, you have three days of grace, consequently you may pay it on March 22.
The Colon

93a. The colon is used to introduce formally a word, a list, a statement or question, a series of statements or questions, or a long quotation.

b. The colon may be used before concrete illustrations of a general statement.

Exercise:

  1. The city must have these improvements paved streets more schools better sanitation and a park.
  2. A guild comprised men of a single class tailors, fishmongers, or goldsmiths.
  3. Everything was favorable, it was a wheat-raising district, there were no rival mills, the means of transportation were excellent.
  4. The personal adornments of the eighteenth century "blood" were elaborate, wigs, cocked hat, colored breeches, red-heeled shoes, cane, and muff.
  5. The chief of the engineers reported "The route, taken as a whole, is practicable enough, but near Clifton, where the yards must be placed, it leads through a rocky defile."
The Dash

94a. The dash may be used instead of the marks of parenthesis, especially where informality is desired.

b. Insert a dash when a sentence is broken off abruptly.

c. The dash may be used near the end of a sentence, before a summarizing statement or an afterthought.

d. The use of the dash to end sentences is childish.

e. A dash should be made about three times as long as a hyphen; otherwise it may be mistaken as the sign of a compound word.

Exercise:

  1. The boy left the package on the where did that boy leave the package?
  2. She was haughty independent as a queen in fact and she told him no.
  3. The clatter of the other typewriters, the relentless movement of the hands of the clock, the calls from the press room for more copy, these made Sears write like mad.
  4. He made her acquaintance what do you think of this by scribbling his name and address on some eggs he sold to a grocer.
  5. He obtained a position in a big department store—his good taste was quickly recognized—within a month he was dressing the windows.
Parenthesis Marks and Brackets

95a. Parenthesis marks may be used to enclose matter foreign to the main thought of the sentence. (But see also 94a and 91e.)

b. A comma or a semicolon used at the end of a parenthesis should as a rule follow the mark of parenthesis rather than precede it.

c. When confirmatory symbols or figures are enclosed within parenthesis marks, they should follow rather than precede the words they confirm.

d. Do not use parenthesis marks to cancel a word or passage. Draw a horizontal line through whatever is to be omitted.

e. Brackets are used to insert explanatory matter in a quotation which one gives from another writer. Explanatory matter inserted by the original writer is enclosed within parenthesis marks.

Exercise:

  1. The supremacy of the horse-drawn vehicle is unless a miracle happens now gone forever.
  2. My count shows (41) forty-one bales of cotton in the mill yard.
  3. [Insert the Marne as your explanation]: "It was this battle," said the lecturer, "that made the name of Joffre immortal."
  4. [Insert Florida as the explanation of the person you are quoting]: "In that state oranges are plentiful."
  5. It was the opinion of Bailey and events proved him right that the government must assume control of the railroads.
Quotation Marks

96a. Quotation marks should be used to enclose a direct, but not an indirect, quotation.

b. A quotation of several paragraphs should have quotation marks at the beginning of each paragraph and at the end of the last paragraph.

c. In narrative each separate speech, however short, should be enclosed within quotation marks; but a single speech of several sentences should have only one set of quotation marks.

d. Quotation marks may be used with technical terms, with slang introduced into formal writing, or with nicknames; but not with merely elevated diction, with good English that resembles slang, with nicknames that have practically become proper names, or with fictitious names from literature.

e. Either quotation marks or italics may be used with words to which special attention is called. (See the examples under 91e, Exception, 3.) Quotation marks are used with the titles of articles, of chapters in books, of individual short poems, and the like. Italics are used with the titles of books or of periodicals, with the names of ships, and with foreign words which are still felt to be emphatically foreign.

f. A quotation within a quotation should be enclosed in single quotation marks; a quotation within that, in double marks.

g. When a word is followed by both a quotation mark and a question mark or an exclamation point, the question mark or the exclamation point should come first if it applies to the quotation; last, if it applies to the main sentence.

Note.—Regarding the position of a comma, semicolon, or period at the end of a quotation, usage differs. Printers ordinarily place commas and periods inside the quotation marks, and semicolons outside, from considerations of spacing. But logic, not spacing, should determine the order, and all three marks should be treated alike. They should be placed within the quotation marks if they were a part of the original quotation; otherwise outside. In quoting manuscript, the quotation marks should enclose exactly what is in the original. In quoting oral discourse, a certain liberty is necessarily allowed.

h. When a quotation is interrupted by such an expression as he said,

1. An extra set of quotation marks is employed, and the interpolated words are normally set off by commas.

2. A question mark or exclamation point should precede the interpolated expression if it would be used were the expression omitted.

3. The expression should be followed by a semicolon if the semicolon would follow the preceding words in case the expression were omitted.

4. Neither the expression nor the words following it should begin with a capital.

i. An omission from a quotation is indicated by dots.

j. Do not use superfluous quotation marks:

1. Around the title at the head of a theme (unless it is a quoted title);

2. As a label for humor or irony.

Exercise:

  1. Carew says, "that the profit comes from selling knickknacks."
  2. What's the matter with that horse? asked Williams. He's as frisky as if he had been shut up a week.
  3. "Who's your favorite character in the play?, persisted Laura. Is it "Brutus"? No, answered Howard; I admire his wife "Portia".
  4. "It's amazing, said Mrs. Phelps, how children love playthings. Helen Locke said yesterday, Hughie always tells me when I am putting him to bed, I want my Teddy bear".
  5. "You see, said Daugherty, the two offices across the corridor from each ether." "One is the county clerk's." "The other is the county collector's."
The Apostrophe

97a. In contracted words place the apostrophe where letters are omitted, and do not place it elsewhere.

b. To form the possessive of a noun, singular or plural, that does not end in s, add 's.

c. To form the possessive of a noun, singular or plural, that ends in s, place an apostrophe after (not before) the s if there is no new syllable in pronunciation. If there is a new syllable in pronunciation, add 's.

d. Do not use an apostrophe with the possessive adjectives its, his, hers, ours, yours, and theirs. But one's, other's, either's take the apostrophe.

e. Add 's to form the plural of letters of the alphabet, of words spoken of as words, and sometimes numbers. But do not form the regular plural of a word by adding 's (See 77).

Exercise:

  1. We don't know theyr'e dishonest.
  2. The soldier's heads showed above the trenches.
  3. Five 8es, three 7es, and two 12es make 85.
  4. Pierce told the Keslers that Jones hogs were fatter than their's.
  5. Its three oclock by his watch; five minutes past three by her's.
The Question Mark and the Exclamation Point

98a. Place a question mark after a direct question, but not after an indirect question.

Note.—When the main sentence which introduces an indirect question is itself interrogatory, a question mark follows.

b. A question mark is often used within a sentence, but should not be followed by a comma, semicolon, or period.

c. A question mark within parentheses may be used to express uncertainty as to the correctness of an assertion.

d. The use of a question mark as a label for humor or irony is childish.

e. The exclamation point is used after words, expressions, or sentences to show strong emotion.

Note.—The lavish use of the exclamation point is not in good taste. Unless the emotion to be conveyed is strong, a comma will suffice. See 91e.

Exercise:

  1. What is my temperature, doctor.
  2. "Shall we go by the old mill?", asked Newcomb?
  3. Did Wu Ting Fang say, "The Chinese Republic will survive."
  4. He inquired whether Lorado Taft is the greatest living American sculptor.
  5. Farewell. Othello's occupation's gone.
99. EXERCISE IN PUNCTUATION
A.

Punctuate the following sentences:

  1. Why its ten oclock
  2. It was a rainy foggy morning
  3. Arthurs cousin said Lets go
  4. I begged her to stay but she refused
  5. His parents you know were wealthy
  6. Near by the children were playing house
  7. Ever since John has driven carefully
  8. I smell something burning Etta
  9. Well Harry are you ready for a tramp
  10. I well remember a trip which I once took
  11. When the day has ended the twilight comes
  12. She was a poor lonely defenseless old woman
  13. Trout bass and pickerel are often caught there
  14. Lees army was defeated at Gettysburg Pennsylvania on July 3 1863
  15. Students who are poor appreciate the value of an education
  16. Clem Rogers who is poor as Jobs turkey has bought a phonograph
  17. He had no resentment against the man who had injured him
  18. He spoke to his father who sat on the veranda
  19. The rifle which he used on this trip was the best he had
  20. His long beard sticking out at an angle from his chin and his tall silk hat looked ridiculous
B.

Punctuate the following sentences:

  1. I found the work difficult did you find it so
  2. If they had agreed to buy things would have been different but they didn't
  3. I could satisfy myself if need be with dreams and imaginary delights she must have realities
  4. Well Im not disappointed its just what I expected
  5. Hard roads are not only an advantage they are almost indispensable
  6. The man who hesitates is lost the woman who hesitates is won
  7. The nihilists accept no principle or creed they reject government and religion and all institutions which cramp the individuals desires
  8. No longer are women considered weaklings although not so strong as man physically they are now assumed to have will and courage of their own
  9. The Pilgrims wished to thank God so they prepared a feast
  10. Our country roads are full of chuck holes consequently one must drive with caution
  11. The first player advances ten paces the second eight the third six and so on
  12. I told her it was her own fault she was too reticent and held herself aloof
  13. He had complained of weariness therefore we left him in camp
  14. The Panama Canal consists of four sections the Atlantic Level the Lake the Cut and the Pacific Level
  15. There are three reasons why I do not like Ford cars first they rattle second they bump and third they never wear out
  16. Protoplasm has been found to contain four elements carbon hydrogen oxygen and nitrogen but by no artificial combination can these be made into the living substance
  17. Phlox mignonette sweet peas cannas all these yield flowers until late in the fall.
  18. He asked for hot water the mollycoddle as if this were a hotel
  19. Is this seat occupied sir asked Brown who stood in the aisle
  20. There are two types of democracy 1 a pure democracy and 2 a representative democracy
C.

Punctuate the following sentences:

  1. And Harvey waiting all this time mind you sprang for the door
  2. I want to go to Memphis Tennessee to the old house if it is still standing where I was born
  3. My bill amounted to exactly counting the car fare nine dollars and ninety five cents
  4. I do not believe it he cried then turning to the others in the group he asked nervously do you
  5. Which is better to borrow money for ones school expenses or to work ones way
  6. He swore swore like a pirate and lashed the horses
  7. Dickens novel Martin Chuzzlewit is satirical
  8. But what of the Dakotas of Minnesota of Wisconsin are they to give us no political support
  9. The grain is then run into a bin called the weighing bin from this it is let down on to the scales
  10. Lincoln showed very plainly what the phrase All men are created equal means and what its application was to the anti-slavery movement.
  11. His name was lets see what was the fellows name.
  12. He looks sharply for little points passed over by the average person are important to him
  13. How uncomfortable I feel in a room whose windows are not covered by curtains I cannot describe
  14. Some time ago he moved away I was sorry because he was a fine young man
  15. I went to the lawyers office to hear the reading of my uncles will
  16. Well well I havent seen you for years But youre the same stub nosed freckle faced good natured Tom
  17. I did not stop long to consider the football togs were nearest at hand so in they went cleated shoes trousers sweater pads headgear and the rest
  18. Today I shall outline explain and argue the subject which has already been announced to you namely The Distribution of Taxes in Illinois
  19. His piping voice his long crooked nose his white hair falling over the shoulders of his faded blue coat his shuffling shambling gait as he hobbled up to Carletons Grocery with his basket all this I shall remember as long as I live
  20. We hold these truths to be self evident that all men are created equal that they are endowed by their Creator with certain inalienable rights that among these rights are life liberty and the pursuit of happiness
100. GENERAL EXERCISE