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 Project Gutenberg 2014-03-11 Public domain in the USA. 364 Various Verschillende Various, Various Youmans, William Jay 1838 1901 Youmans, Wm. Jay‏ (William Jay) Appletons' Popular Science Monthly, June 1899 Volume LV Produced by Judith Wirawan, Greg Bergquist and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) "Appletons' Popular Science Monthly, June 1899" by Various is a scientific publication produced in the late 19th century. This periodical aims to disseminate scientific knowledge and discussions on various contemporary scientific topics, reaching a wider audience through accessible writing and insightful articles. The focus is on advancing public understanding of the natural world, featuring detailed analyses and studies relevant to the societal context of the time, such as geological methods for estimating the age of natural wonders like Niagara Falls. The opening of this edition showcases an article by G. Frederick Wright that discusses a new method for estimating the age of Niagara Falls. It delves into the historical estimates made by prominent geologists, comparing them to new measurements that suggest a more accurate timeline based on geological surveys and the erosion of the falls. The discussion emphasizes the significance of these findings in understanding the geological history of the region and how they can alter the previous assumptions about the falls' age, engaging readers with a mix of historical context and modern scientific inquiry. (This is an automatically generated summary.) file:///public/vhost/g/gutenberg/html/files/45115/45115-h/images/cover.jpg Reading ease score: 54.0 (10th to 12th grade). Somewhat difficult to read. en Science -- Periodicals Technology -- Periodicals AP Text Category: Science - Earth/Agricultural/Farming Category: Journals 473061 2025-10-18T09:26:27.645774 text/html 451005 2024-10-24T03:51:44 text/html 1849497 2025-10-18T09:26:33.505737 application/epub+zip 1852509 2025-10-18T09:26:28.649833 application/epub+zip 218137 2025-10-18T09:26:28.116782 application/epub+zip 1980082 2025-10-18T09:26:37.361761 application/x-mobipocket-ebook 1951192 2025-10-18T09:26:32.914763 application/x-mobipocket-ebook 320725 2022-09-20T15:17:14.048464 application/x-mobipocket-ebook 430636 2025-10-18T09:26:27.081816 text/plain; charset=us-ascii 410686 2024-10-24T03:51:44 text/plain; charset=us-ascii 16695 2025-10-18T09:26:37.502745 application/rdf+xml 8840 2025-10-18T09:26:28.193768 image/jpeg 1817 2025-10-18T09:26:28.155789 image/jpeg 1703152 2025-10-18T09:26:27.740802 application/octet-stream application/zip