Project Gutenberg 2017-06-23 Public domain in the USA. 75 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 945894 945833 2024-07-22T16:09:06.653326 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 7760848 2024-07-22T16:09:23.185296 application/epub+zip 7770543 2024-07-22T16:09:10.368335 application/epub+zip 375223 2024-07-22T16:09:08.588316 application/epub+zip 8008808 2024-07-22T16:09:31.830241 application/x-mobipocket-ebook 7921618 2024-07-22T16:09:20.931286 application/x-mobipocket-ebook 552859 2022-09-25T01:39:12.073725 application/x-mobipocket-ebook 770472 770253 2024-07-22T16:09:03.460904 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 17536 2024-07-22T16:09:31.993200 application/rdf+xml 8536 2024-07-22T16:09:08.762312 image/jpeg 1863 2024-07-22T16:09:08.675315 image/jpeg 6252685 2024-07-22T16:09:07.148421 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