Evolution of the Earth's Crust (geology) by Thomas Webster, 1855.

"Idealer Durchschnitt van der Bildung der Erdrinde" engraved after Thomas Webster and published in Dr. Heinrich Berghaus' Physikalischer Atlas, Gotha, 1855 (map dated 1850.) Fine steel engraved chart with original hand colour, showing a cross section of the crust with stratification and volcanic processes. In the upper part are illustrations of plants and animals from early fossils up to recent times, classified by strata. Several folds as published. This is a large and fascinating plate. Size 81 x 32.5 cms plus margins. Ref F4752