8. Some compound nouns make the principal word plural, and some make both words plural; as, son-in-law, sons-in-law; man-servant, men-servants.

EXERCISE.

Write the plural of the following nouns:—

1.desk, woman, calf, foot, mouse, class.
2.cargo, piano, sky, toy, crisis, potato.
3.story, church, enemy, spoonful, chimney.
4.lily, valley, mother-in-law, wolf, pencil.
5.memorandum, sheaf, child, man-of-war.

LESSON XVI.

Note the following peculiarities:

1. Nouns used only in the plural:—

aborigines,antipodes,annals,banns,bellows,breeches,
matins,measles,news,nuptials,oats,pincers,
scissors,shears,tidings,trousers,vespers,victuals.

2. Nouns that have the same form in both numbers:—