are seldom used. All that occur above decuple or tenfold, are
written with a hyphen, and are usually of round numbers only; as,
thirty-fold, sixty-fold, hundred-fold.

OBS. 5.--A cardinal numeral denotes the whole number, but the corresponding
ordinal denotes only the last one of that number, or, at the beginning of a
series, the first of several or many. Thus: "_One_ denotes simply the
number _one_, without any regard to more; but _first_ has respect to more,
and so denotes only the first one of a greater number; and _two_ means the
number _two_ completely; but _second_, the last one of _two_: and so of all
the rest."--_Burn's Gram._, p. 54. A cardinal number answers to the
question, "_How many_?" An ordinal number answers to the question, "_Which
one_?" or, "_What one_?" All the ordinal numbers, except _first, second,
third_, and the compounds of these, as _twenty-first, twenty-second,
twenty-third_, are formed directly from the cardinal numbers by means of
the termination _th_. And as the primitives, in this case, are many of them
either compound words, or phrases consisting of several words, it is to be
observed, that the addition is made to the last term only. That is, of
every compound ordinal number, the last term only is ordinal in form. Thus
we say, _forty-ninth_, and not _fortieth-ninth_; nor could the meaning of
the phrase, _four hundred and fiftieth_, be expressed by saying, _fourth
hundredth and fiftieth_; for this, if it means any thing, speaks of three
different numbers.

OBS. 6.--Some of the numerals are often used as _nouns_; and, as such, are
regularly declined: as, _Ones, twoes, threes, fours, fives_, &c. So,
_Fifths, sixths, sevenths, eighths, ninths, tenths_, &c. "The _seventy's_
translation."--_Wilson's Hebrew Gram._, p. 32. "I will not do it for
_forty's_ sake."--_Gen._, xviii, 29. "I will not destroy it for _twenty's_
sake."--_Ib._, ver. 31. "For _ten's_ sake."--_Ib._, ver. 32. "They sat down
in ranks, by _hundreds_, and by _fifties_."--_Mark_, vi, 40. "There are
_millions_ of truths that a man is not concerned to know."--_Locke_. With
the compound numerals, such a construction is less common; yet the
denominator of a fraction may be a number of this sort: as, seven
_twenty-fifths_. And here it may be observed, that, in stead of the ancient
phraseology, as in 1 Chron., xxiv, 17th, "The _one and twentieth_ to
Jachin, the _two and twentieth_ to Gamul, the _three and twentieth_ to
Delaiah, the _fou