There’s little Tom Dacre, who cried when his head,
That curled like a lamb’s back, was shaved; so I said,
‘Hush, Tom! never mind it, for, when your head’s bare,
You know that the soot cannot spoil your white hair.’
In these lines, Tom Dacre is introduced and the child speaker is shown consoling and reassuring him after his hair is shaved. There is a direct comparison between Tom's hair and a lamb's wool, that is, a chimney sweeper and the lamb, since both of them are innocent. The narrator tells Tom that he'll be glad when his white hair is gone, since soot won't be able to stain it. We can draw a parallel between the spoiling of something white and pure and the loss of innocense that the chimney sweepers go through, something the narrator is already aware of.