Kevin Karney wrote: Dennis,
Your nearest port of call would be the geology department at the Sedgwick museum in Cambridge... Many readers will find this a little puzzling given that Dennis lives but a stone's throw from The Cockburn Geological Museum at the University of Edinburgh whereas Cambridge is over 300 miles further away. The clue lies in the sign-off... Kevoin The superfluous "o" indicates that he was using a stereographic projection and, by assumption, Edinburgh was the pole of the projection. Frank --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
