... & I recall now that when I read Tell England the first time, long years [about 68!] ago, I didn't recognise the fragment as being related to the 'Redwing' tune, which I didn't consciously know at the time, and found myself mentally singing the words to the tune of "Birds in the wilderness, Down in Demarara"...

I don't have a copy of the book any more, so the above is from memory, but I think I have it substantially right; tho it might have been her neck rather than her feet that she washed in the dirty water.