During this painful period he nevertheless managed, by a truly superhuman effort, successfully to complete and publish several investigations that he had made either alone or in collaboration:
Investigations on induced radioactivity (in collaboration
with A. Debierne).
Investigations on the same subject (in collaboration
with J. Danne).
Investigations on the conductibility provoked in
dielectric liquids by the rays of radium
and the Roentgen rays.
Investigations on the law of the decrease of the
emanation of radium and on the radioactive
constants that characterize this emanation
and its active deposit.
Discovery of the liberation of heat produced by
radium (in collaboration with A. Laborde).
Investigations on the diffusion of the emanation of
radium in the air (in collaboration with J.
Danne).
Investigation on the radioactivity of gases from
thermal springs (in collaboration with A.
Laborde).
Investigation on the physiological effects of
radium rays (in common with Henri Becquerel).
Investigation on the physiological action of the
radium emanation (in common with Bouchard
and Balthazard).