Hydraulic and Pneumatic Mechanics

...the origins of which, enter into the Sea, and the Sea does not overflow; to the place where the rivers go out, they return, so that they may flow again. original: "intrant in Mare, & Mare non redundat; ad locum, unde exeunt flumina, revertuntur, ut iterum fluant." This is a reference to the Book of Ecclesiastes 1:7. The fountains which I bring forth in this Work from the Hydrotechnica Arte: The art of water engineering and hydraulic mechanics for the delight of Princes, so that they may leap, seek out the BEAUTIFUL FOUNTAIN The author is punning on the name of his patron, Johann Philipp von Schönborn. In German, "Schön" means beautiful and "Born" means a spring or fountain.. I mean you, MOST EMINENT LORD, and your favor and benevolence. For unless they are nurtured by your help, you who are the MOST BEAUTIFUL FOUNTAIN, and are increased and enriched by your abundance, they must necessarily dry up. This is true even though they were animated by me to flow and leap with great labor and no less Art. Therefore, let your ears be open to my fountains