From England to Italy: The Intriguing Story of Poli’s Engine for the King of Naples

An interesting, yet unknown episode concerning the effective permeation of the scientific revolution in eighteenth-century Kingdom of Naples (and Italy more generally) is recounted. The intriguing story of James Watt’s steam engine, prepared to serve a Royal Estate of the King of Naples in Carditello, reveals a fascinating piece of the history of that kingdom, as well as an unknown step in the history of Watt’s steam engine, whose final entrepreneurial success for the celebrated Boulton & Watt company was a direct consequence. This story reveals that, contrary to what claimed in the literature, the first introduction in Italy of the most important technological innovation of the eighteenth century did not take place with the construction of the first steamship of the Mediterranean Sea, but rather thirty years before that, thanks to the incomparable work of Giuseppe Saverio Poli, a leading scholar and an influential figure in the Kingdom of Naples. The tragic epilogue of Poli’s engine accounts for its vanishing from historical memory.