Michel Manzi (1849-1915) was a close friend of the celebrated painter Edgar Degas. With regard to Atlantis he followed the ideas of Ignatius Donnelly and the Theosophist, Scott-Elliot, and is sometimes referred to as an occultist. He was also influenced by the work of Abbé Brasseur de Bourbourg. It was not until a few years after his death, in 1922, that his book, Le Livre de l’Atlantide (The Book of Atlantis) was published and is now available online(a).
After reading a translation of chapter five(b), I can confidently denounce this book as a collection of nonsense, heavily influenced by Blavatsky‘s drivel, with references to atlantean flying machines and vril power.