Machine for Circulating Water throughout the Castle, from Civil Architecture

Ever pragmatic, Lequeu included designs for a comprehensive sewage system and a mechanism to distribute water in his depiction of a Moorish pleasure palace. Inside the tower, the wind would lash a stretched canvas, moving a vertical chain that carries a bucket of water from the moat to a channel, which would distribute the water through the structure. At right, Lequeu added a recently invented lightning rod to protect the building.

Jean-Jacques Lequeu (1757–1826)
Machine for Circulating Water throughout the Castle, from Civil Architecture, ca. 1800–1805
Pen and black ink, brown and gray wash, watercolor
Bibliothèque nationale de France, Departement des Estampes et de la photographie