Singular.  Plural. alumnus (masculine) alumni alumna (feminine) alumnA| analysis analyses bacterium bacteria beau beaux cherub cherubim (or cherubs) crisis crises curriculum curricula datum data genus (meaning “class”) genera genius {geniuses (persons or great ability)
                        {genii (spirits)
hypothesis hypotheses oasis oases parenthesis parentheses phenomenon phenomena seraph seraphim (or seraphs) stratum strata tableau tableaux thesis theses

[19] “Foundations,” pp. 47-48.

EXERCISE XIV.[20]

1. Write the plural of:  Alumna, analysis, beau, cherub, crisis,
   curriculum, genus, genius, hypothesis, nebula, oasis, parenthesis,
   phenomenon, synopsis, seraph, stratum, tableau.
2. Write the singular of:  Alumni, curricula, data, bacteria,
   cherubim, oases, phenomena, seraphim, strata, theses.

GENDER.—­The following nouns of different genders are sometimes confounded or otherwise misused:—­

Masculine. Feminine.
abbot               abbess
actor               actress
bachelor            spinster, maid
buck                doe (fallow deer)
bullock             heifer
czar                czarina
drake               duck
duke                duchess
earl                countess
Francis             Frances
gander              goose
hero                heroine
lion                lioness
marquis, marquess   marchioness
monk                nun
ram                 ewe
stag, hart          hind (red deer)
sultan              sultana
tiger               tigress
wizard              witch

[20] TO THE TEACHER.—­To have any value this must be given as a dictation exercise.

EXERCISE XV.[21]

1. Write the feminine word corresponding to: Abbot, actor, bachelor,
   buck, bullock, czar, duke, drake, earl, Francis, hero, lion, marquis,
   monk, ram, stag, sultan, hart, tiger.
2. Write the masculine word corresponding to: Spinster, duck, doe,
   Frances, goose, heifer, ewe, hind, witch.

[21] TO THE TEACHER.—­This should be used as a dictation exercise.

EXERCISE XVI.

Correct the following sentences:—­

1.  The marquess was the executor of her husband’s estate. 2.  He married a beautiful actor. 3.  The tiger broke from its cage. 4.  The duck was pluming his feathers after his swim, and the goose had
   wandered from his companions across the meadows.
5.  The baby girl in “The Princess” may be called the real hero of the tale.