Dry batteries have been used when an electric current was not available.
Now they are using two hundred and seventy number two Burgess dry batteries.
The ignition was accomplished by six dry batteries and a single-wire vibrating coil.
Some of your batteries will be dry batteries of the size used in pocket flash lights.
Buy also a bank of dry batteries of the proper voltage for the plate circuit of the tube.
Dry batteries are cheap and clean, and there are no dangers from acids.
Second, a spark coil, the primary terminals of which were connected to the primary sparker and to a set of dry batteries.
There were dry batteries, and primary batteries, and many odds and ends, which made Jack almost sorry he was leaving the place.
Now, with the aid of dry batteries from the power boat, he had arranged a bright red light.
And the same kind of dry batteries will run Bunny's train when I get it put together.