commonly used as signs of these
depressing passions, it must be confessed that they are sometimes employed
by reputable writers, as marks of cheerfulness or exultation; as, "_Ah_,
pleasant proof," &c.--_Cowper's Task_, p. 179. "Merrily _oh!_ merrily
_oh!_"--_Moore's Tyrolese Song_. "Cheerily _oh!_ cheerily _oh!_"--_Ib._ But
even if this usage be supposed to be right, there is still some difference
between these words and the interjection _O_: if there were not, we might
dispense with the latter, and substitute one of the former; but this would
certainly change the import of many an invocation.

[322] This position is denied by some grammarians. One recent author says,
"The _object_ cannot properly be called one of the principal parts of a
sentence; as it belongs only to some sentences, and then is dependent on
the verb, which it modifies or explains."--_Goodenow's Gram._, p. 87. This
is consistent enough with the notion, that, "An infinitive, with or without
a substantive, may be _the object of a transitive verb_; as, 'I wish _to
ride_;' 'I wish _you to ride_.'"--_Ib._, p. 37. Or, with the _contrary_
notion, that, "An infinitive may be _the object of a_ _preposition_,
expressed or understood; as, 'I wish _for you to ride_.'"--_Ibid._ But if
the object governed by the verb, is always a mere qualifying adjunct, a
mere "explanation of the attribute," (_Ib._, p. 28,) how differs it from an
adverb? "Adverbs are words _added to verbs_, and sometimes to other words,
to _qualify_ their meaning."--_Ib._, p. 23. And if infinitives and other
mere _adjuncts_ may be the objects which make verbs transitive, how shall a
transitive verb be known? The fact is, that the _true_ object of the
transitive verb _is one of the principal_ _parts_ of the sentence, and that
the infinitive mood cannot properly be reckoned such an object.

[323] Some writers distinguish sentences as being of _three_ kinds,
_simple_, and _complex_, and _compound_; but, in this work, care has not in
general been taken to discriminate between complex sentences and compound.
A late author states the difference thus: "A sentence containing but one
proposition is _simple_; a sentence containing two propositions, one of
which modifies the other, is _complex_; a sentence containing two
propositions which in no way modify each other, is _compound_."--_Greene's
Analysis_, p. 3. The term _compound_, as applied to sentences, is not
_usually_ so restricted. An other, using the s