The order of parsing an INTERJECTION, is—an interjection, and why?

"O virtue! how amiable thou art!"

O is an interjection, a word used to express some passion or emotion of the speaker.

The ten parts of speech have now been unfolded and elucidated, although some of them have not been fully explained. Before you proceed any farther, you will please to begin again at the first lecture, and read over, attentively, the whole, observing to parse every example in the exercises systematically. You will then be able to parse the following exercises, which contain all the parts of speech. If you study faithfully six hours in a day, and pursue the directions given, you may become, if not a critical, at least, a good, practical grammarian, in six weeks; but if you study only three hours in a day, it will take you nearly three months to acquire the same knowledge.

EXERCISES IN PARSING.

True cheerfulness makes a man happy in himself, and promotes the happiness of all around him.

Modesty always appears graceful in youth: it doubles the lustre of every virtue which it seems to hide.

He who, every morning, plans the transactions of the day, and follows out that plan, carries on a thread that will guide him through the labyrinth of the most busy life.

The king gave me a generous reward for committing that barbarous act; but, alas! I fear the consequence.

E'en now, where Alpine solitudes ascend,
I set me down a pensive hour to spend;
And, placed on high, above the storm's career,
Look downward where a hundred realms appear:—