>> I think I saw the article in a yearly magazine called >aqua-geographic. I wish I had paid more attention to the article<< Try looking on this web site to find the article: http://petsforum.com/aquageo/ Mark Binkley Columbus Ohio USA <))>< mbinkley at earthling_net Give a man a fish and you feed him for a day; teach him to use "the Net" and he won't bother you for weeks.