Rule I. Letters Omitted.—The apostrophe is used to indicate the omission of a letter or letters.
EXAMPLES.
“O Marcia, O my sister, still there’s hope!”—Addison.
“Thou knowest ’tis common; all, that live, must die,
Passing through nature to eternity.”—Shakespeare.
REMARK.
The apostrophe is made like a comma, but is placed above the line.
Rule II. Possession.—The apostrophe is used to denote possession.
EXAMPLES.
Taine’s “English Literature.” Rawlinson’s “Ancient Monarchies.”