"The Geological Structure of the Globe According to Ami Boue...", Johnston, W. & A.K.

This large map, drawn on Mercator's Projection, is a superb example of thematic mapping with various colors and diagrams used to illustrate the geological distributions throughout the world. The geological formations are fully colored and a key delineates the six major categories identified by Ami Boue. The first two categories are further divided through subtle differences in shading. There are two inset maps: "Elie de Beaumont's Chart of the Elevation of Mountains" and "Illustrations of the Synchronism of Parallel Chains" with colored underlining to delineate seven different systems. Also, two hemispheres show the North and South poles. Along the bottom of the map is a full profile of the "Principle Mountains of the Globe." Surrounded by a decorative keyboard-style border. This map was issued in the scarce first edition of Johnston's The Physical Atlas... in 1848. The Marcou reference cited is for a later version of this map (1855), and it appears that Marcou was not aware of the earlier edition.

Ami Boue (1794 - 1881) was an Austrian geologist who received his early education in Hamburg, Geneva and Paris. In 1820 he issued his Essai geologique sur l'Ecosse, primarily focusing on the study of eruptive rocks. His studies of various geological formations led to his becoming one of the pioneers in geological research. He was one of the founders of the Societe Geologique de France in 1830, serving as president in 1835.

References: Marcou & Marcou #5; Phillips (A) #225.

Condition: B+

On a sturdy sheet with very faint offsetting and light toning along sheet edges.