Project Gutenberg 2015-11-04 Public domain in the USA. 182 Various Verschillende Various, Various The National Geographic Magazine, Vol. I., No. 3, July, 1889 Produced by Ron Swanson "The National Geographic Magazine, Vol. I., No. 3, July, 1889" by Various is a scientific publication written in the late 19th century. This edition of the magazine features a diverse array of articles focused on geographical topics, including detailed studies of the rivers and valleys of Pennsylvania, geological histories, and topographic models. The likely topics within encompass cartography, hydrology, and regional geological transformations that have shaped the landscape over time. The opening of this volume introduces an article by William Morris Davis titled "The Rivers and Valleys of Pennsylvania," which sets the stage for an extensive exploration of the state's river systems. In the introduction, Davis outlines a systematic study aimed at uncovering the causes of the current river courses and tracing their evolutionary history from the prehistoric period of elevation above the sea to the present configuration. He emphasizes the importance of understanding the geological framework and previous research while outlining the general conditions of Pennsylvania's topography and its drainage patterns, preparing readers for a deeper examination of the interrelationship between the land and its waterways. (This is an automatically generated summary.) Reading ease score: 49.9 (College-level). Difficult to read. en Geography -- Periodicals G Text Browsing: Encyclopedias/Dictionaries/Reference Browsing: Travel & Geography Category: Science - Earth/Agricultural/Farming Category: Encyclopedias/Dictionaries/Reference 267047 2025-06-20T08:03:49.842808 text/html 232497 2024-10-22T23:23:10 text/html 2328186 2025-06-20T08:03:54.183832 application/epub+zip 2332030 2025-06-20T08:03:50.525800 application/epub+zip 161447 2025-06-20T08:03:50.132836 application/epub+zip 2411655 2025-06-20T08:03:57.289820 application/x-mobipocket-ebook 2390013 2025-06-20T08:03:53.821807 application/x-mobipocket-ebook 221829 2022-09-22T18:12:33.230554 application/x-mobipocket-ebook 234121 2023-09-21T15:14:56.588798 text/plain 214378 2024-10-22T23:23:10 text/plain; charset=us-ascii 14914 2025-06-20T08:03:57.435731 application/rdf+xml 13291 2025-06-20T08:03:50.230823 image/jpeg 2631 2025-06-20T08:03:50.184792 image/jpeg 2519172 2025-06-20T08:03:49.950858 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog