I came across this note in Fear's Day By Day: Note: Arthur L. Scott’s article, “The Innocents Adrift Edited by Mark Twain’s Official Biographer,” PMLA, Vol. 78, No.3, (June, 1963), p.230-7 covers in depth how Paine butchered this piece, which was initially to be a full-length book. Paine changed the title to “Down the Rhone” and the castrated version was published in Europe and Elsewhere, 1923. and read through the article. Now I'm wondering if transcripts of Twain's original manuscripts are available.