Is the
article _an_ or _a_ always supposed to imply unity? 17. Respecting _an_ or
_a_, how does present usage differ from the usage of ancient writers? 18.
Can the insertion or omission of an article greatly affect the import of a
sentence? 19. By a repetition of the article before two or more adjectives,
what other repetition is implied? 20. How do we sometimes avoid such
repetition? 21. Can there ever be an implied repetition of the noun when no
article is used?

LESSON XIV.--NOUNS, OR CASES.

1. In how many different ways can the nominative case be used? 2. What is
the usual position of the nominative and verb, and when is it varied? 3.
With what nominatives of the second person, does the imperative verb agree?
4. Why is it thought improper to put a noun in two cases at once? 5. What
case in Latin and Greek is reckoned _the subject_ of the infinitive mood?
6. Can this, in general, be literally imitated in English? 7. Do any
English authors adopt the Latin doctrine of the accusative (or objective)
before the infinitive? 8. Is the objective, when it occurs before the
infinitive in English, usually governed by some verb, participle, or
preposition? 9. What is our nearest approach to the Latin construction of
the accusative before the infinitive? 10. What is _apposition_, and from
whom did it receive this name? 11. Is there a construction of like cases,
that is not apposition? 12. To which of the apposite terms is the rule for
apposition to be applied? 13. Are words in apposition always to be parsed
separately? 14. Wherein are the common rule and definition of apposition
faulty? 15. Can the explanatory word ever be placed first? 16. Is it ever
indifferent, which word be called the principal, and which the explanatory
term? 17. Why cannot two nouns, each having the possessive sign, be put in
apposition with each other? 18. Where must the sign of possession be put,
when two or more possessives are in apposition? 19. Is it compatible with
apposition to supply between the words a relative and a verb; as, "At Mr.
Smith's [_who is_] the bookseller?" 20. How can a noun be, or seem to be,
in apposition with a possessive pronoun? 21. What construction is produced
by the _repetition_ of a noun or pronoun? 22. What is the construction of a
noun, when it emphatically repeats the idea suggested by a preceding
sentence?

LESSON XV.--NOUNS, OR CASES.

23. Can words differing in number be in apposition with each other? 24.
What