869603 Marly Machine,1784 (engraving) by French School, (18th century); Private Collection; (add.info.: The Marly Machine was a large hydraulic system built in 1684 to pump water from the river Seine for the Palace at Versailles. Illustration from "Architecture hydraulique ou, l\'art de conduire d\'矇lever, et de m矇nager les eaux pour les differents besoins de la vie" originally in Diderot\'s Encyclop矇die, showing side views of a typical paddle wheel, which powers river pumps from one side and remote pumps from the other); French, out of copyright.