I. Old English Period

Prosody rhythmical, not metrical; determined exclusively by alliteration and accent. Combinations of accented and unaccented syllables perhaps classifiable, but seldom, if ever, reducible to any combination corresponding to the flow of later Middle and Modern English verse, though the principle (of syllabic irregularity in corresponding lines) survives as the most important basis of that verse itself. Rhyme, except in the piece specially entitled "Rhyming Poem" and other very late examples, practically non-existent; the instances collected from other places being very few and quite possibly accidental.

II. Before or very soon after 1200
Earliest Middle English Period.

No pure and unmixed alliterative-accentual verse of the old kind, but a choice between pure syllabic metre of iambic type (Ormulum), less regular but clearly metrical (i.e. "foot-measured") verse, iambic or trochaic (Paternoster, Moral Ode, etc.), and singular mixtures of the alliterative kind (badly done), and the metrical kind (sometimes done rather better) (Layamon, Proverbs of Alfred).

III. Middle and Later Thirteenth Century
Second Early Middle English Period.

The metrifying process going on, with stronger emphasising of the metrical character and almost complete discarding of the alliterative (King Horn, late in the century, has sometimes been claimed as an exception, but without good reason). Definite forms emerge: the two great kinds of octosyllabic couplet—more strictly syllabic (Owl and Nightingale), or less so (Genesis and Exodus); the fifteener-fourteener or seven-foot iambic (Robert of Gloucester); the rime couée or "Romance-six" (Proverbs of Hendyng). Of pure alliterative verse there is no trace whatever.

IV. Earlier Fourteenth Century
Central Period of Middle English.

The metrical development attains complete predominance in the Romances (chiefly octosyllabic couplet or "Romance-six"), and in lyrics such as those of the Harleian MS. 2253. In both there is considerable equivalence, or substitution of trisyllabic (and perhaps also monosyllabic) for dissyllabic feet. The fourteener begins to break itself down into the ballad measure of eight and six, with or without full alternate rhyme. Decasyllabic couplet appears (as it had done even earlier) sporadically. But at an uncertain time—probably about the second third of the century—alliteration again makes its appearance, sometimes alone (William of Palerne), sometimes in company with some rhyme-arrangement (Sir Gawain and the Green Knight); and the two methods continue side by side (though with the alliteration always in the minority and seldom quite pure) for the best part of two hundred years, till well within the sixteenth century itself.

V. Later Fourteenth Century
Crowning Period of Middle English.

The tendencies already indicated, and shown after 1350 by Laurence Minot, the writers in the Vernon MS., and others, culminate in three remarkable poets—Langland, Gower, and Chaucer. The first, who is probably the oldest (though the most plausible theory of his work puts it in stages from the sixth or seventh to the last decade of the century), eschews rhyme altogether, and (as far as he can, but not entirely) declines metrical form—preferring a modernised Old English line, strongly middle-paused, and regularly, but not lavishly, alliterated. Gower, with a little rhyme-royal, employs elsewhere, throughout his voluminous English work, octosyllabic couplet, nearer to the French or strictly syllabic norm than that of any other Middle English writer, though with some tell-tale approaches to variety. Chaucer, between the two, represents the true development of English prosody proper. He practises, from the (disputed) Romaunt of the Rose, to the (certain) House of Fame, the octosyllabic couplet; varies it remarkably and consciously; and gets from it effects excellent in their way, but never, apparently, quite satisfactory to himself. He adopts or imitates from the French, besides minor forms, the great rhyme-royal or Troilus stanza. He has, in his prose, curious "shadows before" of blank verse. But his greatest metrical achievement is the taking up—whether wholly from French or with some consciousness of earlier sporadic attempts in English is disputed, but certainly in the perhaps unconscious line of those attempts—the decasyllabic or heroic couplet, which is first the sole vehicle of his Legend of Good Women, and secondly the main vehicle of The Canterbury Tales.

VI. Fifteenth and Early Sixteenth Centuries
The Decadence of Middle English Prosody.

The prosodic accomplishment of Chaucer, while representing all that Middle English was capable of attaining, represented more than it was capable of maintaining. His followers in Middle Scots, employing not the actual vernacular, but a "made" literary language, carried out his lessons for some time with great success. But those in Southern English appear to have—except in more or less pure folk-poems—succumbed partly to influences of change in pronunciation (which are very imperfectly understood, though the disuse of the final valued e is the certain and central fact), partly to a loss of understanding (which is still more obscure in its nature and causes) of the metres themselves. From Lydgate to Hawes, rhyme-royal most of all, decasyllabic couplet (not so often tried) hardly less, and octosyllabic to a somewhat minor degree, exhibit the most painful irregularity, clumsiness, and prosaic effect, there being sometimes no regular rhythm, and nothing at all but the rhyme to give a poetical character to the composition. The "doggerel" of Skelton is a pretty obvious attempt to escape from this. Only ballad, carol, and the like seem to escape the curse.

VII. Mid-Sixteenth Century
The Recovery of Rhythm.

In the second quarter of the sixteenth century attention seems to have been drawn to the "staggering state" of prosody; by the end of that quarter, or a very little later, we know from positive evidence that it was theoretically felt. But much earlier Sir Thomas Wyatt, and, in his tracks, Henry Howard, Lord Surrey, expressed the fact practically by their imitations of Italian forms. Both tried the sonnet; Wyatt attempted, with little success, terza rima; and Surrey, with more, tried blank verse. The regular quantification or accentuation necessary for the reproduction of these forms evidently gave them (and Wyatt more particularly and naturally, as the pioneer) a great deal of trouble; but they managed it—if not universally or perfectly—somehow; and they kept the practice up in lyric measures less strictly imitated. They also popularised—if they did not introduce—a new combination-variation of the old long lines into the so-called "poulter's measure" or couplet of twelve-fourteen syllables, easily breaking down into six, six, eight, six. Their example was followed by many poets between 1550 and 1580, iambic regularity establishing itself rather at the expense of poetic variety, but with an immense gain to the ear. A very important, though not in itself very poetical, development was also made in the regular anapæstics of Tusser; and the drama, taking up at last Surrey's blank verse, in the meantime experimented with all sorts of forms, regular and doggerel.

VIII. Late Sixteenth Century
The Perfecting of Metre and of Poetical Diction.

This invaluable if not always very stimulating period of drill and discipline (in which Wyatt and Surrey themselves, with Sackville later, are the chief and almost the only poets who transcend experiment) passes, a little before 1580, into one of complete poetic and proportionately complete prosodic accomplishment, with Spenser and his companions and followers for non-dramatic poetry, with Peele and Marlowe preluding Shakespeare in dramatic blank verse. The greatest pioneer, one who not only explores but attains, is Spenser; and he, after presenting in the Shepherd's Calendar the most remarkable record of experiment in the history of English poetic form, proceeds to the perfect structure and exquisite diction of the Faerie Queene. He, however, hardly touches blank verse, and, after the Calendar, eschews the lighter lyric. But both these are taken up by others; and while lyric attains all but the highest possible stage of that diversity in harmony which is especially required by it, the possibilities of blank verse are more than suggested in Shakespeare's predecessors, and are, in the dramatic range, exhausted by Shakespeare himself. Outside the drama, however, and blank verse, the abiding fear of doggerel keeps back the due development of regularised substitution: verse is mostly iambic. But here also Shakespeare pierces the heart of the mystery, and the songs in his plays are as prosodically complete as his blank verse itself. There is much practice in sonnet, and, towards the end of the century, "riding rhyme" or heroic couplet, which had fallen into some disuse, is revived, chiefly for satiric or semi-satiric purposes (as by Spenser in Mother Hubberd's Tale, by Hall, Donne, and Marston in their definite satires, etc., and for "history" by Drayton).

IX. Early Seventeenth Century
The further Development of Lyric, Stanza, and Blank Verse. Insurgence and Division of the Couplet.

Between the latest years of the sixteenth and the earliest of the seventeenth century there is naturally little difference, but the total transformation is rather rapid. Blank verse no sooner attains its absolute perfection in Shakespeare than it begins to show signs of overripeness, in the great tendency to redundance which even he shares in his latest plays, and which distinguishes Beaumont and Fletcher. Stanza does not, after the similar consummateness of Spenser, show a similar formal decline; but there arises a distaste for it. Only lyric perseveres in practically full flourishing; and even exhibits a certain further quintessence of beauty, though some loss of strength. Meanwhile, the decasyllabic couplet revives in a complicated fashion. It does not yet make much recovery of drama, but is very largely practised by Drayton, is declared (at least on Drummond's authority) to be "the bravest sort of verse" by Jonson, and made, towards the end of James the First's reign, the subject of a formal critical-poetical encomium by Sir John Beaumont. But it is a house divided against itself, and it is not till the "stopped" form (in which the rhymes sharply punctuate the sense) conquers the "enjambed" (which in this sub-period is the favourite) that it attains complete popular favour.

X. Mid-Seventeenth Century
Milton.

The period, or sub-period, which may be called "mid-seventeenth century," on one side continues the developments described in the last section, and on another begins those which will be described in the next. But it contains almost the whole work of Milton, who belongs in one sense to both, in another to neither. If he had written no blank verse, he would still be of the first rank as a practical prosodist, in virtue of his stanza-forms, such as that in the "Hymn on the Nativity"; of his remarkably varied octosyllabic couplet in L'Allegro, Il Penseroso, Arcades, and Comus; of the almost unique strophes, with irregular rhyme, in Lycidas; of the Sonnets, adjusted not to the Elizabethan-English, but to the commoner Italian forms; and of the peculiar choric arrangements of Samson Agonistes. But it is undoubtedly as the introducer of blank verse for general poetic practice, and as the modulator of that verse in the directions previously described, that he stands as one of the very greatest masters of English prosody. For, on the one hand, he rescues "blanks" from the chaos into which, by the laches of the dramatists, they were falling; and, on the other, he establishes for ever (though it may sometimes be mistaken by individuals and periods) the principle of foot-equivalence and substitution in the individual line, with that of combination of several lines into a verse-paragraph.

XI. The Later Seventeenth Century
Dryden.

For the moment, however, the work of Milton produces no effect, and though Dryden, his younger contemporary, uses, with great effect, a large variety of metres, his main importance, in the general history of prosody, consists in the establishment of the stopped heroic couplet as at once the most popular and the most dignified of English metres. But he does not at once make it into the strictly decasyllabic, strictly middle-paused kind which dominates the following century. On the initiation (partly at least) of Cowley, he varies it with the Alexandrine, which he sometimes includes in a triplet, while the same extension to three similarly rhymed lines, in decasyllable only, is still more frequent. If he does not exactly introduce, he popularises and for a time maintains, the same couplet in drama, but uses it most successfully in satiric and didactic verse, of extraordinary weight and vigour, while entirely destitute of monotony. He himself and his minor but more lyrical contemporaries, Rochester, Sedley, Afra Behn, etc., continue the older Caroline tradition of song in varied measures, but it dies out. On the other hand, his practice (suggested, doubtless, by Davenant's Gondibert) of the decasyllabic quatrain, and the majestic if not fully Pindaric strophes of his Odes, supply models which serve to vary the unbroken prevalence of the couplet, and are followed by Gray and others, during the succeeding century, with exceptionally fine results.