有声读物: Elements of Geology

Elements of Geology is one in a Series of First Books of Natural History Prepared for the Use of Schools and Colleges. This succinct little textbook from 1846 presents an introduction to geology. The information, albeit not current, is still interesting and of use as a general overview of the subject as well as interesting look into the period. Please note that some of the information has changed considerably since this time. The author was a surgeon in the U.S. Navy and president of the Academy of Natural Sciences. - Summary by Amy Gramour