Ideal Section of a Portion of the Earth's Crust, intended to show The Order of Depositon of the Stratified Rocks, with their relations to The Unstratified Rocks. Composed by Thomas Webster, F. G. S. &c.

Ideal Section of a Portion of the Earth's Crust, intended to show The Order of Depositon of the Stratified Rocks, with their relations to The Unstratified Rocks. Composed by Thomas Webster, F. G. S. &c.