![Prints and Principles: Salomon de Caus' design for the etching “Cave with fountain: Ball raised by a jet of water”, 1615 Prints and Principles: Salomon de Caus' design for the etching “Cave with fountain: Ball raised by a jet of water”, 1615](https://2.bp.blogspot.com/-DD1O6Cs3FAE/WS7I5lQSz7I/AAAAAAAAJSQ/4wwWluEn1SsQ3ot-exLvXQJcTNtcL8FNACEw/s1600/SalomondeCaus_birdfountain_Plate.jpg)
Prints and Principles: Salomon de Caus' design for the etching “Cave with fountain: Ball raised by a jet of water”, 1615
![Salomon de Caus, Les raisons des forces mouvantes (Frankfurt: John Norton, 1615). | St John's College, University of Cambridge Salomon de Caus, Les raisons des forces mouvantes (Frankfurt: John Norton, 1615). | St John's College, University of Cambridge](https://www.joh.cam.ac.uk/sites/default/files/images/library/special_collections/mechanisms2.jpg)
Salomon de Caus, Les raisons des forces mouvantes (Frankfurt: John Norton, 1615). | St John's College, University of Cambridge
![File:Wasserkraft fuer die Orgelmaschine im Hortus Palatinus Stich von Salomon de Caus.jpg - Wikimedia Commons File:Wasserkraft fuer die Orgelmaschine im Hortus Palatinus Stich von Salomon de Caus.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/a/a3/Wasserkraft_fuer_die_Orgelmaschine_im_Hortus_Palatinus_Stich_von_Salomon_de_Caus.jpg)
File:Wasserkraft fuer die Orgelmaschine im Hortus Palatinus Stich von Salomon de Caus.jpg - Wikimedia Commons
![Salomon de Caus, Les raisons des forces mouvantes (Frankfurt: John Norton, 1615). | St John's College, University of Cambridge Salomon de Caus, Les raisons des forces mouvantes (Frankfurt: John Norton, 1615). | St John's College, University of Cambridge](https://www.joh.cam.ac.uk/sites/default/files/images/library/special_collections/mechanisms1.jpg)