Relentless Time, destroying power,
Which stone and brass obey,
Who giv'st to ev'ry flying hour
To work some new decay.
In the Alexandrine, when its power was once felt, some poems, as Drayton's Polyolbion, were wholly written; and sometimes the measures of twelve and fourteen syllables were interchanged with one another. Cowley was the first that inserted the Alexandrine at pleasure among the heroick lines of ten syllables; and from him Dryden professes to have adopted it.
The Triplet and Alexandrine are not universally approved. Swift always censured them, and wrote some lines to ridicule them. In examining their propriety, it is to be considered that the essence of verse is regularity, and its ornament is variety. To write verse, is to dispose syllables and sounds harmonically by some known and settled rule; a rule however lax enough to substitute similitude for identity, to admit change without breach of order, and to relieve the ear without disappointing it. Thus a Latin hexameter is formed from dactyls and spondees differently combined;
