Introduction: Mechanical Romanticism -- DEVICES OF COSMIC UNITY -- Ampère's Experiments: Contours of a Cosmic Cubstance -- Humboldt's Instruments: Even the Tools Will Be Free -- Arago's Daguerreotype: The Labor Theory of Knowledge -- SPECTACLES OF CREATION AND METAMORPHOSIS -- The Devil's Opera: Fantastic Physiospiritualism -- Monsters, Machine-Men, Magicians: The Automaton in the Garden -- ENGINEERS OF ARTIFICIAL PARADISES -- Saint-Simonian Engines: Love and Conversions -- Leroux's Pianotype: The Organogenesis of Humanity -- Comte's Calendar: From Infinite Universe to Closed World -- Conclusion: Afterlives of the Romantic Machine.