53. A Vessel in which Water and Air ascend and descend
alternately 75
54. Water driven from the Mouth of a Wine-skin in the Hands of a
Satyr, by means of compressed Air 76
55. A Vessel, out of which Water flows as it is poured in, but if
the supply is withheld, Water will not flow again, until the
Vessel is half filled; and on the supply being again stopped,
it will not then flow until the Vessel is filled 77
56. A Cupping-Glass, to which is attached, an Air-exhausted
Compartment 79