The Economical Geology of Illinois Volume 2 is a book written by Amos Henry Worthen and published in 1882. The book is a comprehensive study of the geology of Illinois, with a focus on the state's economic minerals and resources. It covers a wide range of topics, including coal, oil, gas, lead, zinc, iron, and building stones. The author provides detailed descriptions of the geological formations that contain these resources, as well as their distribution...