[FORMULE.Not proper, because the colon after the word "classes," is not the most suitable sign of the pause required.

In Greek, the difference is greater: the colon, expressed by the upper dot alone, is the only point between the comma and the period; the ecphoneme, or note of exclamation, is hardly recognized, though some printers of the classics have occasionally introduced it; and the eroteme, or note of interrogation, retains in that language its pristine form, which is that of our semicolon.

The Colon, or member, is the greatest division or limb of a period, and is the chief constructive part of a compound sentence.