I gave in, and shelled out to see the John Martin show. (It closes on the 15th-) I enjoyed it, although I still think the prices are too high. I particularly liked the mezzotints, which I wasn't familiar with, and the lively son et lumiere near the end was pretty cool.
I was interested to see that Martin did an album on the character of trees, and that one, in Rchmond Park (?) was locally known as 'Martin's Oak'... might be of interest to
jabberworksalthough I doubt if it's survived...
I'm coming up next week for a few days and wondered if you'd like to meet at all? I'd like to visit the exhibition on at the Wellcome collection: http://www.wellcomecollection.org/whats-on/exhibitions/miracles-and-charms.aspx
Have you been to the Wellcome? It's really good.