The man I met—I refer to Captain Jones—was in the naval service.
126. Use the dash in the place of the comma to set off more definitely some part of a sentence.
I was always lacking what I needed most—money.
127. Use the dash preceded by a comma before a word which sums up the preceding part of a sentence.
Democrats, Republicans, Prohibitionists, Socialists, and Populists,—all were there.
128. Do not use dashes where not required or in place of some other mark of punctuation.
The Parenthesis Marks ( )
129. Use the parenthesis marks only to enclose a statement that is thrown into the sentence, but is grammatically independent of it.
He belongs (at least so it is said) to every secret society in town.
130. Do not use a comma or other punctuation mark with the parenthesis marks unless it would be required even if there were no parenthesis. When other punctuation is used it should follow the parenthesis.