BTW, if you want to read a book on the subject of how they became extinct, I recommend an acquaintance's work: http://www.nytimes.com/books/first/p/price-flight.html David Ritchie, Dun Playin' Portland, Oregon------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html