First, I like to apologise to all those who have visited this site and not had me respond to their posting. I have been travelling a great deal over the last six months, then teaching in St Louis for a month, and then trying to get my feet back on planet earth, and I stopped going on line for a while. When I did I found the site full of spam, which ( thank you so much,  Joseph!) has now been erased so the landscape is much clearer. Replies are now on line to most postings.

I am heading off to ...