Having dismissed the “essential need” for rhyme, claimed to be exclusive to poetry, let us examine what rhyming in poetry is useful for in practical terms. It is a simple observation that lines which rhyme have some close joint meaning. Either they echo one another for support or they contradict one another for emphasis. More light is shed by Stephen Fry (2) - “rhyme, like alliteration, is thought to have originated in pre-literate times as a way of allowing the words of sung odes, lyrics, epics and sagas more easily to be memorized.”
Fry observes that much of poetry is about “consonance” in the sense of correspondence: the likeness or congruity of one apparently disparate thing to another. Poetry is concerned with “consonance”, meaning the connections between things (3), seeing the world in a grain of sand. Poets are always looking for the wider “rhymes” in nature and experience. Thus, hope rhymes with spring, and death rhymes with winter, lips rhyme with roses, war with storms.
Let us examine further the idea of Fry’s “consonance” in some detail. In William Wordsworth’s I wandered lonely as a cloud ( IWLAAC ), the first lines are
1 I wandered lonely as a cloud, 2 That floats on high o'er vales and hills, 3 When all at once I saw a crowd, 4 A host, of golden daffodils;
Line 1 rhymes with line 3 because the loneliness of the cloud is contrasted strongly with the companionability of the crowd. So we can deduce that if ideas are clearly opposed, rhyme is appropriate. Line 2 rhymes with line 4, because floating on high may be a reminder of the heavenly host. So we can deduce that if ideas emphasize or echo each other, rhyme is appropriate.
It is not only Romantics like Wordsworth who use rhyme in this way. In Yeats’ Lake Isle of Innisfree (100 years after Wordsworth), the middle stanza says
1 And I shall have some peace there, for peace comes dropping slow, 2 Dropping from the veils of the morning to where the cricket sings; 3 There midnight's all a glimmer, and noon a purple glow,4 And evening full of the linnet's wings.
Yeats rhymes lines 1 and 3, for they both speak of silent peace. He rhymes 2 and 4, for they both speak of the music in the island paradise, neatly balanced with the opposition of evening and morning.
In free verse, which often lacks strong end-rhyme, internal rhyme acts to link together “one apparently disparate thing to another”, as Fry puts it. Heaney’s Digging ( 80 years after Yeats ) is about men cutting peat (turf). Here is no semblance of end-rhyme. But we can easily see the internal rhymes such as milk-corked-drink and bottle-sloppily and nicking-digging. Even the contrast between “straightened up” and “digging down” is signaled by internal rhyme of corked-nicking. And the emotional bond felt between the poet and his grandfather is deeply apparent - without overt end-rhyme
My grandfather could cut more turf in a day
Than any other man on Toner's bog.
Once I carried him milk in a bottle
Corked sloppily with paper. He straightened up
To drink it, then fell to right away
Nicking and slicing neatly, heaving sods
Over his shoulder, digging down and down
For the good turf. Digging.
Of course poets don’t write their poems in this mechanistic way but it is evident in retrospect that there is a logic in their way of using rhyme. It’s not just trying to make one line sound like another just to show how cleverly words can be associated, or to make it “more emotional”. When poetic rhyme is talked of in these terms, it becomes an elitist topic, where no amateur poet may dare have a view. Rhymes are useful to show many interesting details of poets and their poetry without any mysterious reference to “emotional” intensity.
Through their rhymes, not only Heaney and Yeats, but Wordsworth, Coleridge, and others reveal their inner selves. Clearly, the use of rhyme may indicate a lot more than the poet intended. Coleridge, in an enthusiastic mood after an opium-powered dream, wrote the first part of Kubla Khan which contains a vividly clear description of the pleasure dome. His first five lines use a markedly different rhythm from rest of poem, showing the beauty of the sacred river Alph. Coleridge’s writing was interrupted and he stopped writing. When he eventually managed to get back to writing the second part, the dream had gone, never to be recaptured, and replaced by a wish to build like Kubla. In his actual manuscripts, his handwriting changes noticeably: after the interruption it assumes a downslope showing his more negative mental state.
The use of rhymes shows us Coleridge’s different mentality between the two parts, something he never intended. In the first part, 16 of the 36 (mostly longish) lines deal with the physical environment of the cavern and he uses strong end-rhyme In the second part only 3 out of 18 much shorter lines deal with physical environment and use weak end-rhyme. The irregular rhyme pattern shows the poet’s loss of enthusiasm replaced by wishful thinking. But equally the length of lines, rhythm changes, and lexical content are crucial in showing his mood changes.
It is instructive to examine the scheme of Wordsworth’s rhymes in IWLAAC, not for what it says, but for what it doesn’t say. End-rhyme can reveal a great deal more than Fry’s “consonance”. Each stanza of IWLAAC is in the form of a sexain, a quatrain completed by a couplet (4). What may this reveal? Wordsworth’s sister Dorothy loved countryside walks and kept a diary of her walks and what she saw, but she was no poet. Wordsworth read her diary one day and saw her account of the daffodils, and decided to write a poem. He never saw these flowers personally, he simply embellished on what his sister had seen. In other words, he imagined them, which was the gold standard for one of the leading Romantic poets of the day. This ‘family teamwork’ is unintentionally shown through the rhyme scheme.
If we read only the quatrains in succession (ignoring the couplets), they give a pretty close idea of the poem embellished by Wordsworth. If we read only the couplets in succession, (ignoring the quatrains), they give a close approximation to Dorothy’s words as they appear in her diary. Wordsworth’s poetical quatrain-story is rich in end-rhyme, imagery, metaphor, assonance and slant rhyme, relating to clouds, stars, inward eye, and other things. Dorothy’s non-poetical couplet-story is lacking in images except for dancing. Wordsworth never intended to show the poem’s progenitors through his rhymes, but he clearly does so.
Poets write because they intend to show deep meaning about some topic. Good poetry may have rhyming words or it may not. Bad poetry may also use rhyming or not. What the poet intends to show in his writing may not be what he actually shows. His use of end-rhyme in particular may be interpreted wrongly by over-zealous champions of rhyme, bringing into disrepute the use of rhyme generally. We need to look carefully at each rhyme to assess its true worth.
(Don't omit the obvious use of repetitive rhyme in children's stories like the Three Pigs.....huff and puff etc )
FOOTNOTES
(1) Encyclopedia Britannica
(2) Stephen Fry in his book, The Ode Less Travelled
(3) This is not to be confused with the sound device consonance (e.g., the hard/k/ sound in “the ticking of the clock”). Consonance of this type often accompanies comparable sound devices such as assonance and alliteration.
(4) Wordsworth’s IWLAAC is written in sexains. Any 6-line stanza is a sexain. Many rhyming schemes are possible, and ABABCC in iambic pentameter is known as a “Venus and Adonis” stanza. IWLAAC is in iambic tetrameter.