Yes, the tune's great. It's not very typical of the others in the book though, it's a lot more bluesy (the first part reminds me very much of New Orleans-style funeral band music, whereas the other tunes are much less swinging, more hoedown-ish).

All of the Walk Arounds featured in the Ryan's book (there's only 7 of them) are viewable on that same website:

http://abcnotation.com/tunePage?a=trillian.mit.edu/~jc/music/book/ryan-cole/Tunes/WalkAroundBrudderBones/0000

"Brudder Bones" is apparently from a 19th Century collection compiled by a fiddler called Elias Howe. I notice that www.archive.org has a lot of Howe's books in PDF form, so I might see if I can track down the original book it comes from, where there might be more of its quirky kind.