I'm not with you at all on the "almost rhyme", Sharon. The technical name for it is "consonance", and it's been used by the greatest writers as an alternative to rhyme, or sometimes alongside rhyme. Dismissing it as just being an imperfect rhyme is, to my mind, a mistake.

I just looked up "consonance" in a fascinating book called "A readers guide to literary terms", to check I'd got it right - and the example the gave was from Emily Dickinson:

'T was later when the summer went
Than when the cricket came,
And yet we knew that gentle clock
Meant nought but going home.

'T was sooner when the cricket went
Than when the winter came
Yet that pathetic pendulum
Keeps esoteric time.

It wouldn't have been oarticularly hard for her to rewrite those lines with rhymes - but I think the poem would have lost something.