+Direction.+—Study the following list:—
Bellows, corps, [Footnote: The singular is pronounced ko:r, the plural ko:rz.] deer, gross, grouse, hose, means, odds, pains (care), series, sheep, species, swine, vermin, who, which, that (relative), what, any, none.
(The following have two forms in the plural).
Apparatus, apparatus or apparatuses; heathen, heathen or heathens.
(The following nouns have the same form in both numbers when used with numerals; they add s in other cases; as, four score, by scores.)
Dozen, score, yoke, hundred, thousand.
The following nouns have no plural.
(These are generally names of materials, qualities, or sciences.)
Names of materials when taken in their full or strict sense can have no plural, but they may be plural when kinds of the material or things made of it are referred to; as, cottons, coffees, tins, coppers.
+Direction.+—Study the following list of words:—