Download or read book The Works of Charles Darwin: v. 9: Geological Observations on South America (1846) (with the Critical Introduction by J.W. Judd, 1890) written by Paul H Barrett and published by Routledge. This book was released on 2016-07-22 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ninth volume in a 29-volume set which contain all Charles Darwin's published works. Darwin was one of the most influential figures of the 19th century. His work remains a central subject of study in the history of ideas, the history of science, zoology, botany, geology and evolution.