The export of mesmerism out of metropolitan territory is very limited, but it had a great success, a few weeks after the arrival of Antoine Hyacinte Chastenet de Puysegur in the great town of the northern part of the colony of Saint-Domingue, Le Cap Français, in June 1784. This episode is especially known after the hostile testimony, of Moreau de Saint-Mery. The lists of the members of Philadelphes, however, are often the same than those of the members of the Society of Universal Harmonie in Le Cap. So, magnetism and learning sociability are the same expression of a creolisingwhite-consciousness, which self-modelled on the fashions of the metropolitan culture, though different. This social phenomenon will be developed mainly in the great northern town, the other sources coming from the same background. Black slaves and free-coloured people are not directly concerned. The usual testimony of Moreau de Saint-Méry, who gives mesmerism equivalent to voodoo must be kept in perspective. (traduit par Bernard Gainot)