Project Gutenberg 2017-03-09 Public domain in the USA. 38 McBride, James 1788 1859 M'Bride, James Citizen of the United States Symmes, John Cleves 1780 1829 Symmes's Theory of Concentric Spheres Demonstrating that the Earth is hollow, habitable within, and widely open about the poles Produced by Chris Curnow, Daniel Lowe and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) en Earth (Planet) -- Miscellanea Symmes, John Cleves, 1780-1829 QB Text Browsing: Science - General 259869 259878 2024-08-22T12:37:02.231216 2023-09-23T10:57:19.910549 text/html text/html 260413 2017-03-09T09:31:12 text/html; charset=utf-8 244747 2017-03-09T09:31:12 text/html; charset=utf-8 application/zip 285479 2024-08-22T12:37:07.045210 application/epub+zip 284093 2024-08-22T12:37:03.068197 application/epub+zip 177992 2024-08-22T12:37:02.588218 application/epub+zip 337261 2024-08-22T12:37:10.094183 application/x-mobipocket-ebook 306330 2024-08-22T12:37:06.551215 application/x-mobipocket-ebook 217095 2022-09-24T18:23:24.967485 application/x-mobipocket-ebook 225668 225466 2024-08-22T12:37:01.815233 2023-09-23T10:57:19.514554 text/plain; charset=us-ascii text/plain 225862 2017-03-09T09:31:10 text/plain; charset=utf-8 80075 2017-03-09T09:31:12 text/plain; charset=utf-8 application/zip 18429 2024-08-22T12:37:10.233151 application/rdf+xml 14595 2024-08-22T12:37:02.673198 image/jpeg 2204 2024-08-22T12:37:02.631201 image/jpeg 248281 2024-08-22T12:37:02.258192 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://www.gutenberg.org/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog