postrophe with the possessive adjectives _hers_, _ours_, _yours_,
_theirs_, _its_.

2. All nouns in the singular and all nouns in the plural except those
ending in _s_ take an apostrophe and _s_ to form the possessive.

Nouns in the plural ending in _s_ take an apostrophe only to form the
possessive.

There is much difference of opinion as to the invariability of the rule
concerning singular nouns in _s_. DeVinne advises following the
pronunciation. Where the second _s_ is not pronounced, as often happens,
to avoid the prolonged hissing sound of another _s_, he recommends
omitting it in print.

Moses' hat, for Moses's hat.
For conscience' sake.

3. The apostrophe indicates the omission of letters in dialect, in
familiar dialogue, and in poetry.

That's 'ow 'tis.
'Twas ever thus.

When two words are practically made into one syllable, a thin space may
be put before the apostrophe, except that _don't_, _can't_, _won't_, and
_shan't_ are consolidated. This use of a space serves to distinguish
between the possessive in _s_ and the contraction of _is_.

Where death 's abroad and sorrow 's close behind.

4. Figures expressing dates are often abbreviated, but it is not good
general practice.

The boys of '61.
It happened in '14.

5. The apostrophe is used to form the plural of letters and figures.

Cross your t's and dot your i's.
Make 3's and 5's more plain.

Except in these cases the apostrophe is not a plural sign and should be
so used only when it is intended to reproduce a dialect or
colloquialism.

Wrong: All the Collins's were there.
Right: All the Collinses were there.

The final _ed_ of past tenses and past participles was formerly
pronounced as a distinct syllable, thus: _clos-ed_, _belov-ed_, and this
pronunciation continued in common use in poetry long after it was
discontinued in prose. During this period of transition the modern
pronunciation was indicated by dropping the _e_ and using an apostrophe,
thus: _clos'd_, _belov'd_. It is now understood that while the full
spelling is to be used, the old pronunciation is not to be used unless
specially indicated by placing a grave accent over the _e_ of the last
syllable, thus: _beloved_.

At the same period poets, especially, used an apostrophe to indicate a
silent _e_ as in _ev'ry_, but the usage is now obsolete.

Such abbreviations as _Dep't_, _Gov't_, _Sec'y_, and the like, are
objectionable in p