The natural boundaries of the geographer are rarely described by right lines. Whenever these occur, however, the geologist may look for something remarkable.


The Old Red Sandstone, Chapter VI (p. 121), J.M. Dent & Sons Ltd. 1922


The natural boundaries of the geographer are rarely described by right lines. Whenever these occur, however, the geologist may look for something...

The natural boundaries of the geographer are rarely described by right lines. Whenever these occur, however, the geologist may look for something...

The natural boundaries of the geographer are rarely described by right lines. Whenever these occur, however, the geologist may look for something...

The natural boundaries of the geographer are rarely described by right lines. Whenever these occur, however, the geologist may look for something...