One day, while you work through one of your countless puzzle books, you notice that a sheet of paper has been slipped inside with a curious little poem written on it.
An ancient man demolished his estate,
And therefore, with enthusiasm innate,
He was bewildered when a hoax was glued
Somewhere beside where he had said adieu.
The dome where five lone defects lost their head
Confounds small pools where diamonds sleep instead.
At first glance you think that it's just another of your brother's nonsense poems, but you notice the slight imperfections in meter and rhyme that aren't usually there, and for some reason you feel that this poem in a particular is positively more cryptic than the others...
What is the poem a study in?
It's been a while, so I thought I'd give a hint:
You turn the page, and notice something written on the other side: 5 4 8 2 5 7 (8)