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.

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    Fig. 3. The machine for arlificial rain and hail. A, A, kc. the boards that have holes throush which lliot paffes. D the axis on which the wheel turns. Fig. 4. The magical tree. A BCD the box that contains the copper veffel FG, into which air is forced by the fyringe MN, Fig. 5. At I is a cock, that lets the air into the hollow ftalk of the tree O, and from thence it palfes, by the other branches, which are hollow likewife, to the fruit and flowers. PLATE IV. p. 64. Fig. 1. CADB a veffel of water, in which one end of the fyphon F is plunged, and being ex- haufted of the air, the water runs out at the other end E. Fig. 2. A fucking pump. C D the piflon, E F two valves that open upw'ard, MN the water in the well, H the pipe by which it runs out. Fig. 3. The forcing pump. C a folid piflon, D a valve, H the pipe for conveying the water, in which is the valve E, through which the water is forced, by the piflon C, into the ciflern F, from whence it runs out. Fig. 4. The lifting pump. BD is an inverted piflon placed in the frame GEQHO ; when this part is puflied down the water afcends through the pifton D, and when the frame is drawn up, it is forced through the vah'e C, and out of the ciflern at H, A4 PLATE