The fountains' beauty is very important in Versailles gardens, but many efforts were necessary to realize it. Among a lot of essays, the Marly Machine pleased best Louis XIV. The researchers disagree about this machine's attribution, generally, it is believed that Renkin Sualem, expert engineer, was its author. This paper's issue is to survey this polemic since the eighteenth century and to manifest the present writer's opinion. As a result, the problem is in De Ville's knowledge about the hydraulics. Considered that he was industrial bourgeois and educated by the Jesuit, his participation in the technical conception wouldn't be denied.
