Project Gutenberg 2017-06-23 Public domain in the USA. 72 Tyndall, John 1820 1893 Tyndal, John Sound Produced by Peter Vachuska, Chuck Greif, Turgut Dincer 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 Sound QC Text Browsing: Science - General 945893 945833 2024-08-22T16:09:47.879684 2023-09-23T14:16:28.229915 text/html text/html 926207 2017-06-23T15:08:00 text/html; charset=utf-8 6195777 2017-06-23T15:08:20 text/html; charset=utf-8 application/zip 7760838 2024-08-22T16:10:05.070564 application/epub+zip 7770516 2024-08-22T16:09:52.006656 application/epub+zip 375170 2024-08-22T16:09:49.919667 application/epub+zip 8008785 2024-08-22T16:10:14.167553 application/x-mobipocket-ebook 7921616 2024-08-22T16:10:02.953605 application/x-mobipocket-ebook 552859 2022-09-25T01:39:12.073725 application/x-mobipocket-ebook 770472 770253 2024-08-22T16:09:44.810683 2023-09-23T14:16:24.547910 text/plain; charset=us-ascii text/plain 770708 2017-06-23T15:07:56 text/plain; charset=utf-8 262099 2017-06-23T15:08:18 text/plain; charset=utf-8 application/zip 17803 2024-08-22T16:10:14.341529 application/rdf+xml 8536 2024-08-22T16:09:50.112657 image/jpeg 1863 2024-08-22T16:09:50.017660 image/jpeg 6252651 2024-08-22T16:09:48.382712 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 en.wikipedia