Volume 3

Rational recreations, in which the principles of numbers and natural philosophy are clearly and copiously elucidated by a series of easy, entertaining, interesting experiments. Among which are all those commonly performed with the cards / By W. Hooper.

  • Hooper, William, M.D.
Date:
1787
Catalogue details

Licence: Public Domain Mark

Credit: Rational recreations, in which the principles of numbers and natural philosophy are clearly and copiously elucidated by a series of easy, entertaining, interesting experiments. Among which are all those commonly performed with the cards / By W. Hooper. Source: Wellcome Collection.

    350/416 (page 304)
    RECREATION XIV. p. 39 ‘T’he mercurial Jhower. A piece of wood is cemented to the top of the receiver, and mercury poured over it. The preffure of the air, as the receiver is exhaufted, forces the mercury through the wood in the form of a fhower, that is fometimes luminous in the dark. R E C R E A T I O N XV. p. 39 The fountain In vacuo. A tube that is hermetically fealed at one end, and clofed by a flop-cock at the other, is placed on the receiver, and when the air is exhaufted from the tube it is immerfed in water, which will then play up in the tube, in the form of a fountain.