Caption:
The first demonstration on the river Saône in France of the early experimental steamship Pyroscaphe, built by Marquis de Jouffroy d'Abban, 15 July 1783. Claude-François-Dorothée, marquis de Jouffroy d'Abbans, 1751 – 1832. Naval architect, engineer, industrialist and French Freemason. From Les Merveilles de la Science, published 1870.