Rahn-Otto: Investigator site log

Run 1: 2026-10-06 (first run, no earlier sites.md). Chrome (claude-in-chrome), Google search. Web time used: about 8 minutes of the 10-minute cap (start epoch 1791322883, stop at +482 s). One tab opened and closed. Downloads: none. Several open-access files are ready to save (listed under "Files to download"), but saving files needs the owner's approval in this session, so research/files/ is empty. Name warning: "Otto Rahn" also matches the German writer Otto Rahn (1904-1939, Grail and Cathar books, SS). Always add "Cornell", "bacteriology", "mitogenetic" or "1881".

Files to download (owner approval needed)

• Rahn 1934, J. Bacteriol. 28:153-158: https://pmc.ncbi.nlm.nih.gov/articles/PMC533662/pdf/jbacter00816-0041.pdf (528 KB)
• Cornell memorial statement, Rahn_Otto_1957.pdf (221 KB): https://hdl.handle.net/1813/18707
• Naumova et al. 2018 review, JBPE (CC-BY): PDF link on https://jbpe.ssau.ru/index.php/JBPE/article/view/3308
• Volodyaev and Beloussov 2015 (CC-BY): https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2015.00241/full

Keywords tried

1. "Otto Rahn" Cornell bacteriology "mitogenetic"
2. Wainwright 1998 "mitogenetic rays" "Perspectives in Biology and Medicine" Rahn
3. Project MUSE: content:Wainwright mitogenetic
4. JBPE: mitogenetic radiation historical review
5. "Otto Rahn" Cornell memorial statement bacteriology 1881
6. eCommons memorial statements: Rahn
7. Rahn "physico-chemical basis of biological radiations" Cold Spring Harbor symposia 1934
8. Volodyaev Beloussov 2015 "Revisiting the mitogenetic effect of ultra-weak photon emission"
9. Hollaender Claus 1937 "experimental study of the problem of mitogenetic radiation" National Research Council Bulletin
10. "Otto Rahn" "human radiation" OR Hieronymus OR "fingertip" bacteriologist
11. Rahn Barnes 1933 oxycholesterol OR "oxy-cholesterol" radiation yeast OR menotoxin
12. HathiTrust author: Rahn, Otto
13. Papers Past: "Otto Rahn"
14. Wainwright Killham Russell Grayston 1997 "Partial evidence for the existence of mitogenetic radiation" (Google, Semantic Scholar, PubMed)

Not yet tried (for the next run): "Sidney W. Barnes" Rochester; "M. N. Barnes" Cornell yeast dissertation; Tuthill Rahn; Ferguson Rahn; "Tabulae Biologicae" Rahn 1937; "Rahn" "mitogenetische Strahlung" (German); "Gurwitsch-Strahlung" Rahn; Protoplasma-Monographien Borntraeger 1936 review; "Invisible Radiations of Organisms" review 1936 Nature; Rahn "Microbes of merit" radiation; Hieronymus "eloptic" Rahn; Heinemann cytagenin; Gesenius blood cancer; Protti emoradiazione; Roffo cholesterol ultraviolet; Macht menotoxin Rahn; Christiansen menstrual radiation; Science Service Watson Davis 1932 Rahn; AAAS Syracuse 1932 Rahn Science; Quickenden 1989 Radiation Research.

Leads for review

1. The inventor's own work

• Rahn (1934) "The Disagreement in Mitogenetic Experiments, a Problem in Bacterial Physiology", J. Bacteriol. 28:153-158 [web] https://pmc.ncbi.nlm.nih.gov/articles/PMC533662/ . Bears on claim 7 (detectors respond only in a particular physiological state). Free; not yet read.
• Rahn (1934) "The physico-chemical basis of biological radiations", Cold Spring Harb. Symp. Quant. Biol. 2:226-240 [web] https://symposium.cshlp.org/content/2/226.extract . The excerpt presents the radiation as part of the heat of reaction that "need not necessarily appear as heat". Bears on claims 2 and 3 (energy accounting).
• Rahn (1937) "Mitogenetic radiation", Tabulae Biologicae 14:1-35 (cited by Naumova et al. 2018) [web] https://jbpe.ssau.ru/index.php/JBPE/article/view/3308 . A review written after the book, possibly after Hollaender and Claus; it would show whether Rahn changed his view. Not located yet.
• Tuthill and Rahn (1934) "Analysis of the bud formation of the Baron method", Archive of Biological Sciences Ser. B 35:289-296 (cited in Naumova et al. 2018). Bears on claim 1 (yeast detector).
• Rahn (1933) "Problems in Growth Chemistry" (JSTOR), with a section on blocking growth acceleration by absorbing mitogenetic rays in gelatin [web, Google snippet]. Claim 1.
• Rahn's 1932 AAAS (Syracuse) talk "the influence of human radiation on micro-organisms", reported in the New York Times, 25 June 1932: eye, nose and fingertip radiation killed yeast; the right hand was stronger; there was variation between people [web] https://www.nytimes.com/1932/06/25/archives/evil-eye-is-found-to-be-based-on-fact-radiations-from-human-body.html . Bears on claim 6. This is the earliest public form of the "harmful human radiation" claim.
• A 1944 printing of Invisible Radiations of Organisms exists in HathiTrust; it should be compared with the 1936 text for changes. Also Physiology of bacteria (1932) and Microbes of merit (1945) for Rahn's later view [web] https://catalog.hathitrust.org/Search/Home?lookfor=Rahn%2C+Otto&type=author
• Cornell memorial statement, Rahn 1881-1957 (Professor of Bacteriology 1927-1949) [web] https://hdl.handle.net/1813/18707 . Biography; not yet read.

2. Supporting information by others

• Wainwright, Killham, Russell and Grayston (1997) "Partial evidence for the existence of mitogenetic radiation", Microbiology 143:1-3 [web] https://pubmed.ncbi.nlm.nih.gov/33711853/ . A modern UK attempt that reports partial support for claim 1. Volodyaev and Beloussov (2015) say it obtained "a good effect" but could not make it reproducible.
• Wainwright (1998) "Historical and recent evidence for the existence of mitogenetic radiation", Perspect. Biol. Med. 41:565-571 (Project MUSE blocked). Google snippet: Rahn's book was "impressive and influential".
• Volodyaev and Beloussov (2015), Front. Physiol. 6:241 [web] https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2015.00241/full . They argue that the main negative studies (Hollaender and Claus 1937; Quickenden 1974-1989) used untested conditions, and that the effect needs "scrupulousness in details". They also credit Rahn with optimising the bacterial detector protocol. Bears on claim 7. This is the authors' characterization; they work in the Gurwitsch tradition.
• Naumova et al. (2018), JBPE 4(4):040201 [web] https://jbpe.ssau.ru/index.php/JBPE/article/view/3308 . Review of 1923-1948 work, including the Soviet "cancer quencher" blood test: Pesochensky's 1942 doctoral dissertation, The teaching of the cancer quencher (1947), and dissertations in 1950 and 1955. Bears on claim 5 (blood radiation absent in cancer), which went on in the USSR after Rahn's book.
• Gurwitsch and Gurwitsch (1939) "Ultra-Violet Chemi-Luminescence", Nature 143:1022, and Audubert (1938) Angew. Chem. 51:153 on UV emission from chemical reactions (cited by Naumova et al.). Bears on claim 2.

3. Closely related work

• Later "ultra-weak photon emission" or "biophoton" work: Colli and Facchini (1954); Vladimirov, Tarusov (1950s-70s); Quickenden and Que Hee (1974) "Weak luminescence from the yeast ... and the existence of mitogenetic radiation"; F. A. Popp (1976 on); Cifra and Pospisil (2014); cell-to-cell light signalling (Fels 2009; Albrecht-Buehler 1992; Farhadi 2007; Trushin 2003-04; Scholkmann, Fels and Cifra 2013). Bears on claims 1, 2 and 6, in different words ("ultra-weak photon emission", "non-chemical distant interaction").
• W. Stempell (1932) Die unsichtbare Strahlung der Lebewesen (Jena), a German book with nearly the same title, using Liesegang rings and H2O2 as detectors (Rahn covers these methods in Chapter IV).
• Reiter and Gabor (1928) Zellteilung und Strahlung (Siemens): Dennis Gabor, later a Nobel laureate in physics, worked on this subject.
• The Secret Life of Plants (Tompkins and Bird, 1973) links Rahn to T. G. Hieronymus's "eloptic" radiation devices. A later popular account; check what it says Rahn did.

4. Historical record

• Hollaender and Claus (1937), An experimental study of the problem of mitogenetic radiation, National Research Council Bulletin 100. Nature 140:1007 (1937) reports: two years' work, biological and physical detectors, "all the attempts have yielded negative results"; about 600 papers had been published [web] https://www.nature.com/articles/1401007c0 . It is the main contemporary negative test against claims 1, 2 and 7, one year after the book. Gerlach (1939) reviewed it in Naturwissenschaften.
• Absence of evidence to analyse: the Western literature goes quiet after 1937 to 1939, while Soviet work goes on (dissertations to 1955; A. A. Gurwitsch books 1968 and 1974). Competing explanations: the negative NRC study was accepted as decisive; detector unreliability (Rahn's own claim 7); a language and Cold War split; loss of interest after better photomultipliers became available. Deciding records: Rahn's reaction (Tabulae Biologicae 1937; Cornell papers), Western reviews of the 1944 printing, and the Soviet dissertations.
• 1932 press coverage of Rahn's human-radiation claims was syndicated worldwide by Science Service (Watson Davis): Papers Past has 6 New Zealand reprints, August-October 1932 [web] https://paperspast.natlib.govt.nz/newspapers/HAWST19320910.2.120 . The original wire text should be in the Science Service records at the Smithsonian.
• Person identity: D. I. Macht (1949) cites "Rahn, O. Barnes, M.N. Morphological Changes in Yeast Induced by Biological Radiation, Diss." [web] https://www.ajog.org . The "Barnes and Rahn 1933" oxy-cholesterol work (claim 6) may be by M. N. Barnes, a Cornell student, not by the physicist Sidney W. Barnes. facts.json should be checked on this point.
• Career: Assistant Professor at the University of Illinois from 1913 [web] https://uihistories.library.illinois.edu ; Professor of Bacteriology at Cornell 1927-1949 [web] https://www.weberrarebooks.com ; born 9 April 1881, died 26 September 1957 [web, via Singleton 2017 citation of the memorial statement].