He connected the other ends of these wires to a dry battery.
The electrodes of a dry battery are the zinc and carbon elements.
If no light is available, a buzzer and dry battery should be used.
Cells of 'The 1900 Dry Battery' furnished the current used as a stimulus.
Instead of fuse, however, each one had on its end two small shiny screws such as are found at the top of a ...