In the course of live specially planned expeditions, the author studied the behaviour of man in the very special environment of caves. He explains the tests employed. The results obtained suggest that the human organism seems able to adapt to this uncommon environment but exhibits lethargy and reduced activity.
Etude du comportement de l'homme en milieu souterrain (Bilan de cinq experimentations).
International Journal of Speleology,
Available at: https://digitalcommons.usf.edu/ijs/vol3/iss1/2