In paragraph LII of the Pneumatica the Alexandrian scientist Hero (1st century A.D.) describes a siphon inside a glass drinking vessel, closed at the top by a lid MN. At the base of the lid are two openings, H and F, with two tubes attached to them: HK terminating inside the vessel and FG terminating outside. Inserted in a small hole on the handle is tube XD, used to let water or wine into the vessel. When the vessel is filled, the liquid enters tube HK until it flows out inside the lid MN, from where it then flows down through the opening F. In a surprising effect the wine, against its nature, gushes upward to form a little fountain.