In the discussion of the papers by Prof. Ambartsumian and Dr Ledoux, Dr E. Schatzman expressed himself as being much impressed by the arguments of Ambartsumian concerning the origin of the non-thermal radiation in the stars. He regarded it as very probable that the explanation of this phenomenon in the UV Ceti and T Tauri stars, and in the variable cometary nebulae, lay in the domain of nuclear processes. However, Schatzman wished to propose a different explanation from that of Ambartsumian for this nuclear phenomenon. He stated that it seems possible that hydromagnetic processes would be able to communicate considerable velocities to atoms in the outer layers of certain stars. During this process, nuclear reactions would take place, and Schatzman thanked Mrs Burbidge for having drawn his attention to the resonance reaction Ne20+H1→Ne21+e+, and to the subsequent formation of neutrons from the reaction Ne21+He4→Mg24+n. These neutrons would lead to the formation of radioactive elements, which are carried out to produce the non-thermal radiation of the variable comet-like nebulae.