_My._ _Ag._ _N._ _M._ _Th._
_Mr._ _Je._ _S._ _D._ _Tu._ _F._

These may be used in tables and in other places where very great
condensation is necessary, but not elsewhere.

In general, much greater abbreviation is permissible in the tables, notes,
and other condensed matter than in the body of the text. {5}

III. TIME.

Statements of time should not be abbreviated in ordinary reading matter;
_at half past two o'clock in the afternoon_. If the context makes it clear
whether forenoon or afternoon is meant one may write:

_at three, at seven o' clock_.

This form is used statistically, in enumerations, in tables, and the like.

IV. OTHER ABBREVIATIONS INVOLVING THE USE OF NUMERALS.

The use of numerals and the spelling of numbers in full will be found
treated at length in the Printer's Manual of Style (No. 42). As the use of
the numeral is in a sense an abbreviation a few general rules may properly
be given here.

1. Spell out ages;

_eighty-two years and four months old_.
_in his eighty-third year_.
_children between the ages of six and fourteen_.

2. Spell out references to decades;

_in the early eighties_.

The form _in the '80s_, is very objectionable.

3. Spell out numbers of centuries, of sessions of Congress, of military
bodies, of political divisions, of Egyptian Dynasties, of streets, and
the like unless lack of space renders the abbreviation absolutely
necessary.

_Twentieth century_.
_Forty-second Congress_.
_One hundred and first Pennsylvania Infantry_.
_Eighteenth Dynasty_.
_Ninth Ward_.
_Fifth Avenue_.

In case numerals are used, Egyptian Dynasties are always designated by
Roman numerals. Writers on Egypt usually use this form:

XVIII_th Dynasty_.

{6}

4. Spell out sums of money when occurring in ordinary reading matter in
isolated cases:

_That press cost five thousand dollars._

When several such numbers occur close together, and in all statistical
matter, use figures.

_Those three presses cost $2,500, $3,600, and $5,000._

5. Spell out round numbers, that is, approximate numbers in units of
100 in numbers of less than 1000 and in units of 1000 if the numbers
are more.

_An army corps numbers forty thousand men._
_The Fifth Corps numbers 37,462._
_There are about five hundred off