21. Sacrificial Vessel which flows only when Money is introduced 37

22. A Vessel from which a variety of Liquids may be made to flow

through one Pipe 38

23. A Flow of Wine from one Vessel, produced by Water being poured

into another 39

24. A Pipe from which flows Wine-and-Water in varying

proportions 40

25. A Vessel from which Wine flows in proportion as Water is

withdrawn 41

26. A Vessel from which Wine flows in proportion as Water is

poured into another 43

The pneumatics of Hero of Alexandria · 第 44 / 110 题