compelled to submit to the necessity of the case; to take the language
as it _is_, and not as it _should be_, and bow to custom.

PHILOSOPHICAL GRAMMAR investigates and develops the principles of
language, as founded in the nature of things and the original laws of
thought. It also discusses the grounds of the classification of words,
and explains those procedures which practical grammar lays down for our
observance.

PRACTICAL GRAMMAR adopts the most convenient classification of the words
of a language, lays down a system of definitions and rules, founded on
scientific principles and good usage, illustrates their nature and
design, and enforces their application.

PRINCIPLE. A principle in grammar is a peculiar construction of the
language, sanctioned by good usage.

DEFINITION. A definition in grammar is a principle of language expressed
in a definite form.

RULE. A rule describes the peculiar construction or circumstantial
relation of words, which custom has established for our observance.

* * * * *

ENGLISH GRAMMAR.

ENGLISH GRAMMAR is the art of speaking and writing the English language
with propriety.