Another species of triplet occurs in the Pope measure (pentameter-decasyllabic). It is formed by the introduction, after an ordinary couplet, of a third line, repeating the rhyme and consisting of eleven syllables and six feet. Dryden, however, and some other writers, gave an occasional triplet without the extra foot. The Alexandrine, i.e., the six-foot line, ought to close the sense, and conclude with a full stop.
THE QUATRAIN.
Of this form of stanza the name is legion. Of the most common styles, the reader's memory will supply numerous examples. I shall merely give a few of the rarer kinds. The quatrain may consist practically of two couplets, or of a couplet divided by a couplet, as in Tennyson's "In Memoriam." But the usual rule is to rhyme the first and third, and second and fourth. The laxity which leaves the two former unrhymed, is a practice which cannot be too strongly condemned. Quatrains so formed should in honesty be written as couplets, but such a condensation would possibly not suit the views of the mob of magazine-versifiers, who have inflicted this injury, with many others, upon English versification.
It may be well to note here that the rhyme of the first and third lines should be as dissimilar as possible in sound to that of the second and fourth. This is, in fact, a part of the rule which forbids repetitions of the same vowel-sounds in a line—chief of all, a repetition of the particular vowel-sound of the rhyme. The rhymes recurring give a beat which is something like a cæsura, and when therefore the rhyme-sound occurs elsewhere than at its correct post it mars the flow. Here follow a few examples of the quatrain. I have not specified the syllables or feet, as the reader by this time will have learned to scan for himself; and, owing to the varieties of measure, such a specification would be cumbrous:—
"The woodlouse dropp'd and roll'd into a ball,
Touch'd by some impulse, occult or mechanic,
And nameless beetles ran along the wall
In universal panic."
—Hood, Haunted House.
"That fawn-skin-dappled hair of hers,