Copy 2
An introduction to electricity. In six sections ... : illustrated with copper plates / by James Ferguson.
- James Ferguson
- Date:
- 1770
Licence: Public Domain Mark
Credit: An introduction to electricity. In six sections ... : illustrated with copper plates / by James Ferguson. Source: Wellcome Collection.
145/156 (page 137)
![[ *37 ] IV. Machines for fhewing that when folid bodies arc immerfed and fufpended in fluids, the folid lofes as much of its weight as its bulk of the fluid weighs ; and that the weight lofb by the folid is imparted to the fluid. A hydroftatic balance, for fhewing the fpecific gravities of bodies, and detecting counterfeit gold. A working model of Archimedes’s fpiral pump. Working models of fucking, lifting, and forcing pumps. A working model of a quadruple pump-mill, for raiflng water by means of water turning a wheel. A working model of the Hungarian engine for raiflng water from mines. A working model of Mr. Blakey's fire engine. A working model of the Perfian wheel for raiflng water. A model](https://iiif.wellcomecollection.org/image/b30516705_0002_0145.jp2/full/800%2C/0/default.jpg)
