NOTE TO RULE 1. _An_ is used before a vowel or silent _h_, and _a_
before a consonant or _u_ long, and also before the word _one_.
It is not only disagreeable to the ear, but, according to this note,
improper to say, _a_ apple, _a_ humble suppliant, _an_ hero, _an_
university, because the word _apple_ begins with a vowel, and _h_ is not
sounded in the word _humble_, for which reasons _a_ should be _an_ in
the first two examples; but, as the _h_ is sounded in _hero_, and the
_u_ is long in _university, a_ ought to be prefixed to these words:
thus, _an_ apple, _an_ humble suppliant: _a_ hero, _a_ university. You
may correct the following