Paris, unpublished, 1925. Two handwritten letters, dated "8 nov. 1925" and "24 12 1925", one letter typed (carbon copy) with two additional leaves, dated "le 22 novembre 1925", and a six pp. letter (carbon copy - versos blank), dated "II décembre 1925"". two cardboard sheets, with six and five photos respectively, showing "radiated" and "control" fields, or plants, mounted.

The results of scientific research on the influence of radiated soil on the growth and productivity of vegetables. The results were forwarded to Daniel Berthelot, who, apparently, supervised this series of experiments. Daniel Berthelot (1865-1927) was a Parisian physician who published mainly in the Academie des Sciences. The experiments were done by employees of the Ministère de l'Agriculture, Institut des Recherches Agronomiques, a trio of scientists, named Roux, Bruno, and Schmid. The methods used, however, are unclair, and the results appear to be ambiguous. The photos of test fields and plants, however, are intriguing.