The curvature of the range around the Brazilian massif, and the position of the zone of older rocks upon the eastern flank, led Suess to the conclusion that the Andes owe their origin to an overthrust from east to west, and that the Vorland lies beneath the Pacific. In the south Wehrli and Burckhardt maintain that the thrust came from the west, and they look upon the ancient rocks of Argentina as the Vorland.
Ross's Pansebeia (1655), and idealized by P. Burckhardt in 1900.
An application to the hyperbolic logarithm of is given by Burckhardt in the introduction to his Table des diviseurs for the second million.
In the tribune are fine mosaics of the 9th century, which, Burckhardt remarks, completely break with Byzantine tradition.