2026-10-06 Chappell Natural Philosophy Society wiki - Hilgenberg-OC

Site: https://wiki.naturalphilosophy.org (advocacy wiki for dissident science; pages on expansion tectonics are written from that side, and the site labels them "What is disputed here"). Query: full-text search "Hilgenberg" -> 50 results (23 viewed in list). [web] https://wiki.naturalphilosophy.org/index.php?search=Hilgenberg&fulltext=1

Found

• Pages on Hilgenberg, the 2003 honour volume, his works ("Über Gravitation" 1931, "Vom wachsenden Erdball", "Paläopollagen der Erde"), and an online Expanding Earth Bibliographic Database (Scalera's bibliography, closing section of the 2003 volume, pp.419-421 per an Academia.edu snippet) with an index listing Hilgenberg's titles in English translation. The Hilgenberg-in-geophysics page links an Internet Archive copy of the Earth-Prints PDF: https://web.archive.org/web/20071013213642/http://www.earth-prints.org/bitstream/2122/2015/1/Hilgenberg%20(2).pdf
• "Über Gravitation" page (1931): "In this book Hilgenberg proposed a theory of gravity due to a converging (sink) flow of the ether." (The publisher field is garbled; it is the subtitle.) [web] https://wiki.naturalphilosophy.org/index.php?title=%C3%9Cber_Gravitation
• Ivan Osipovich Yarkovsky (1844-1902) page [web] https://wiki.naturalphilosophy.org/index.php?title=Ivan_Osipovich_Yarkovsky :
• Hypothèse cinétique de la gravitation universelle en connexion avec la formation des éléments chimiques (Moscow, published by the author; Scalera's own copy, photocopied at the Bibliothèque nationale de France, is dated 1888, 137 pp.; the wiki's list says 139 pp.). Ether particles stream into celestial bodies, are absorbed and converted into ordinary matter; gravitation is the pressure of that inflow; elements are built up inside planets and stars; bodies therefore gain mass and grow.
• Russian edition 1899 (79 pp.) and 1912 editions (Moscow 137 pp.; St Petersburg 268 pp.). Dating disputed (1888/1889/1899/1912), as set out by Scalera.
• The wiki calls Yarkovsky "the ancestor of every later attempt", Hilgenberg's included, to explain expansion by new matter. His side result, the Yarkovsky effect (recoil from anisotropic thermal re-emission), is mainstream and measured in asteroid orbits [web, same page; also memory, high confidence].
• Other pages linking Hilgenberg: Mantovani, Bogolepow, Keindl, Barnett, Shneiderov, J.W. Gregory, Snider-Pellegrini, Umbgrove, Hallam, van Hilten, Rudolf Gottfried, Alfred Wegener (not opened).

Bearing on the claims

• Claims 1-2: Yarkovsky (1888) is earlier, closely parallel work: ether inflow as the cause of gravity plus conversion into matter inside bodies. Hilgenberg said he arrived at his view independently of "Riemann and others" (1933 book); whether he knew Yarkovsky is unknown. Yarkovsky's 1888 French text (BnF/Gallica) is a lead for next run.