2026-10-08 colysa.ch: 1925 press article quoting the 1924 Societe de Biologie note

Found through Google: query Gosset Gutmann Lakhovsky Magrou "Société de biologie" 1924 géranium tumeurs. Page saved by script: research/pages/colysa-rco.html. URL [web]: https://www.colysa.ch/le-radio-cellulo-oscillateur-originel/

Stake: colysa.ch is the site of "Laboratoires Colysa", a present-day seller of Lakhovsky-type devices (an interested party; the name continues Lakhovsky's own 1929 company, C.O.L.Y.S.A. = Circuit Oscillant LakhovskY S.A., see the internet-archive note). The page reproduces a 1925 press article, "Vers la guerison du cancer"; the newspaper's name and date are not given on the page. The quoted note itself matches the citation found independently in Roussakow 2013 and in Kotzareff's 1931 thesis (which quotes the same passages).

The 1924 note as quoted [web]

Citation (from Roussakow 2013 and Kotzareff 1931): A. Gosset, A. Gutmann, G. Lakhovsky and J. Magrou, "Essai de therapeutique du 'cancer experimental' des plantes", C. R. Societe de Biologie 91, 626-628, 26 July 1924.

Authors as given by the article: Prof. A. Gosset (surgeon), A. Gutmann (head of his medical clinic), Georges Lakhovsky, and J. Magrou "de l'Institut Pasteur, chef de laboratoire a la Salpetriere". Magrou is not named in claims.md; he was the plant-tumour specialist who produced the tumours.

What the quoted note says (paraphrased, with short quotes): - Tumours produced on Pelargonium zonatum by inoculating Bacterium tumefaciens (Erwin F. Smith's method); Magrou had produced many. Untreated, they grow indefinitely, "meme enlevees chirurgicalement, ces tumeurs ont continue a proliferer". - Apparatus: the Radio-Cellulo-Oscillateur, wavelength about 2 m, "150 millions de vibrations par seconde". - Plant 1: treated one month after inoculation (tumours cherry-stone size); two 3-hour exposures 24 h apart. The tumour first kept growing like the controls; about 16 days after the first session it began to necrose; necrosis complete about 15 days later; the dead lobes separated from the stem. Healthy stem and leaves unharmed. - Plant 2: 11 sessions of 3 h; necrosis began at 16 days. - Plant 3: 3 sessions of 3 h (9 h); same course. - Controls: "Seize Pelargonium temoins ont ete laisses sans traitement. Tous portent des tumeurs en pleine activite". - So the note reports n = 3 treated plants and 16 untreated controls. Exposure dose (power, distance, field) is not in the quoted text. - The journalist adds: the apparatus costs under 200 francs to build and runs on ordinary mains current.

Bearing on the claims (no verdicts)

• Claim 3: gives the treated-plant count (3) and the protocols, which claims.md and facts.json do not state. The note is co-signed by a senior Paris surgeon and a Pasteur Institute plant pathologist.
• Kotzareff (1931 thesis, internet-archive note) adds that Lakhovsky told him the transmitter drew 40 W input power, and that Lakhovsky had used 2 to 10 m waves.
• Roussakow 2013 (wiley note) summarises the same work as cell death "after initial growth acceleration", "mainly or entirely not temperature dependent".