| http://www.w3.org/ns/prov#value | - In carrying out my improvement any ordinary medical battery is made use of and at theextremity of each cord or conductor it is preferable to attach a cup of rubber, wood or other non-conducting material for receiving a sponge or other porous substance for holding the liquids, and at the bottom of each cup is placed a disk or plate of carbon that is united with the conductor.
|
