> ...I have tried all of the URLs listed below, and know them to work. If
> you plan to visit some of the pages, you might find it easier to view the
> Web-based copy of this article in the NATIVE-L archives. The URL is
> "http://bioc09.uthscsa.edu/natnet/archive/nl/9706/0039.html"
Sorry. I got it wrong. The URL is actually:
http://bioc09.uthscsa.edu/natnet/archive/nl/9706/0040.html
Gary