(O Mother Carey, mother!
How gathers thy train to the sea from the heaven!)'
'And who's Mother Carey, and what is her train,
Sister Helen?
And why do you call her again and again?'
'You troublesome boy, why that's the refrain,
Little brother.
(O Mother Carey, mother!
What work is toward in the startled heaven?)'
'And what's a refrain? What a curious word,