 Gibier received a gold medal for his investigations into an outbreak of cholera in Spain, and was made a Chevalier of the Legion of Honour for his work on cholera in the south of France.In Paris Gibier formed a circle of people interested in Spiritualism, which included Caroline de Barrau.In 1887 Gibier published "Le spiritisme (fakirisme occidental)", a critical and experimental study that included discussion of mediums, North American Indians and Hindu Fakirs.