Project Gutenberg 2013-12-27 Public domain in the USA. 254 Haeckel, Ernst 1834 1919 Haeckel, Ernst Heinrich Philipp August Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, First Part: Porulosa (Spumellaria and Acantharia) Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII E-text prepared by Charlene Taylor, Adrian Mastronardi, Keith Edkins, and the Online Distributed Proofreading Team (http://www.pgdp.net) from page images generously made available by Internet Archive (https://archive.org) "Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-76" by Ernst Haeckel is a scientific publication written in the late 19th century. The book presents a detailed examination of Radiolaria, a group of microscopic marine organisms, analyzing their morphology, classification, and ecological significance as revealed through the findings of the H.M.S. Challenger expedition. The opening of this comprehensive report sets the stage for an extensive investigation into Radiolaria, expressing Haeckel's realization of the immense variety and complexity of these organisms over the ten years he devoted to this study. It discusses the methodology employed for collecting and examining samples from deep ocean waters, emphasizing the significance of Radiolaria in understanding oceanic life. Haeckel outlines his initial expectations and acknowledges the challenges he faced, ultimately presenting a thorough account of over 4,300 species and emphasizing the rich variety within Radiolaria, while highlighting the interplay between their life cycles and environmental factors. (This is an automatically generated summary.) file:///public/vhost/g/gutenberg/html/files/44525/44525-h/images/cover.jpg Reading ease score: 58.5 (10th to 12th grade). Somewhat difficult to read. en Radiolaria Q Text Browsing: Science - General Browsing: Science - Genetics/Biology/Evolution Category: Science - Biology Category: Science - Earth/Agricultural/Farming 4580713 2025-06-18T05:16:08.615787 text/html 4721213 2024-10-23T21:46:29 text/html 1212802 2025-06-18T05:17:55.198741 application/epub+zip 1309978 2025-06-18T05:16:34.661683 application/epub+zip 1122996 2025-06-18T05:16:21.179703 application/epub+zip 2794494 2025-06-18T05:18:38.556105 application/x-mobipocket-ebook 2444395 2025-06-18T05:17:34.600870 application/x-mobipocket-ebook 2269173 2022-09-20T09:52:22.865783 application/x-mobipocket-ebook 3045763 2023-09-19T10:57:31.756609 text/plain 3025375 2024-10-23T21:46:29 text/plain; charset=us-ascii 15937 2025-06-18T05:18:38.949032 application/rdf+xml 9833 2025-06-18T05:16:22.547655 image/jpeg 1584 2025-06-18T05:16:21.874677 image/jpeg 1126480 2025-06-18T05:16:08.962732 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 de.wikipedia en.wikipedia