Channing, William F.(William Francis),1820-1901 · Boston : Thomas Hall · leaf 261
the zinc being somewhere in metalliccontact with the copper; or it may be owing to the foulnessof the zinc plate, or to the weakness of the copper solution,which in that case will have lost its color. 5. A bundle of iron wires is shown in the cut within theinner helix. This can be removed at… … Fig. 6. No. 6. Coil and Battery, in box, for family use. Avery convenient form, including handles and wire. Price,$10.00.
Electrotherapy · Medicine, Physical · Electricity
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
