Rahn-Otto: central claims

Project: Otto Rahn, Invisible Radiations of Organisms (Protoplasma-Monographien IX, 1936; physics chapter by Sidney W. Barnes). One document, text fully extracted (230 PDF pages, 9 OCR'd). After QE, deep reads cover PDF pp.44-200 (chemical sources, detector methods, physical counters, failures, fingertip radiation, special properties, analysis, blood and nerve, morphology and wounds, cancer and oxy-cholesterol), with tables read from page images. Only PDF pp.1-43 (Barnes's physics primer), pp.147-159 and pp.201-206 (Outlook) rest on the digests alone. Page tags in the review files are PDF pages (book page = PDF page minus 14). The book mostly reports the work of A. Gurwitsch and his school (above all Gurwitsch's 1932 monograph); Rahn is an advocate who also did some of the experiments himself (Ferguson and Rahn 1933, Tuthill and Rahn 1933, and the oxy-cholesterol work with M. N. Barnes, probably Mrs. Margaret N. Barnes of his laboratory and not the physicist Sidney W. Barnes who wrote Chapter I [read: preface and author index, per the reviews]). Rahn states many gaps and concessions himself; they are recorded in facts.json.

1. Living cells in the right physiological state (young yeast and bacterial cultures, onion root tips, working muscle, blood, nerve, tumours, developing eggs) emit extremely weak short ultraviolet light (about 1900-2600 Angstrom, "mitogenetic radiation") that speeds up cell division in other cells that absorb it. Inside the field the band is disputed: Reiter and Gabor (1928) found the effective rays at 3200-3500 Angstrom (maximum 3400) and the Gurwitsch school did not reproduce that; Rahn calls the German results unexplained. Rahn and the school also report that pulsed (intermittent) light is about 30 times more potent in threshold time than continuous light (a regular pulse train worked, an irregular one did not), and that the sender must have been in daylight (yeast grown in the dark did not radiate).
2. The light comes from ordinary biochemistry: oxidation, glycolysis, proteolysis, phosphate and nucleic acid cleavage, and even neutralization of acid by alkali and dissolving of NaCl each emit it, and each process has its own narrow band "fingerprint" (for example 5 positive 10-Angstrom strips out of 60 for blood glycolysis), as shown by a biological detector (yeast or bacteria used as the "photographic plate"). Physical detection is reported more weakly and contested: photoelectron counters (Rajewsky; Frank and Rodionow), gold-sol flocculation (Heinemann), silver bromide and photographic plates (Lepeschkin; Suchow and Suchowa) and Liesegang rings (Stempell), with Rahn himself advising caution about the counter results.
3. The energy accounting is unresolved: one 2020 A quantum per sucrose molecule would be 420 cal/g, about 43 times Rubner's measured 9.7 cal/g of heat, and Rahn offers only a reabsorption (activation chain) explanation and says the origin of the spectra "is by no means clear".
4. Irradiated solutions and tissues re-emit light ("secondary radiation", at a different wavelength and sometimes stronger, polarised by reflection and then said to be far more effective), which spreads along onion roots at about 30 m/s and along frog sciatic nerve at 30 +/- 3 m/s, the speed of the nerve impulse, so that it may take part in nerve conduction; Anna Gurwitsch's optic-nerve and optic-lobe work and Latmanisowa's parabiosis of the sciatic nerve by radiation are offered as supporting evidence.
5. Blood of healthy people radiates and blood of cancer patients (and in leukaemia, severe sepsis and old age) does not, while malignant tumours radiate strongly, so blood radiation can serve as a cancer test and cancer may be a radiation disorder (Gurwitsch, Gesenius, Heinemann, Protti; Siebert and Seffert's counter results on several hundred blood samples; Roffo's ultraviolet rat tumours are cited as a possible link; Protti's yeast injections, "cytophotolysis" and young-blood "rejuvenation" belong here).
6. The radiation shapes development and health: it speeds tadpole wound healing and limb growth, distorts sea urchin larvae and yeast forms, links neighbouring cells (the crowding effect), and a harmful form from menstrual blood, certain people's fingertips and oxy-cholesterol kills some yeasts through quartz (one student's fingertip: 5 minutes over an open glass ring, 15 minutes through 2 mm of quartz).
7. Failed replications do not disprove the effect, because detectors respond only in a particular physiological stage and fail unpredictably for days or weeks (ten recorded failures, among them 54 failures in 373 Gurwitsch-school experiments), and because biological error is large and varies between laboratories; Rahn also points to physical evidence from photoelectron counters (Rajewsky; Frank and Rodionow; Siebert and Seffert) and reports its critics (Lorenz's three error sources).