M?moires et observations sur les effets des eaux de Bourbonne-les-Bains, en Champagne, dans les maladies hyst?riques & chroniques This book, "M?moires et observations", by Jean Baptiste Chevalier, is a replication of a book originally published before 1772. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.