A manual of electricity, magnetism and meteorology (1844)
Lardner, Dionysius, 1793-1859, Walker, Charles Vincent, 1812-1882 · London Longman, Brown, Green & Longmans · leaf 566
ul.—U and V {fig. 291.) are handles connected with the conductingwires, and furnished with pieces of sponge, which are employed inthe application of electricity for medical purposes. These sponges aremoistened with acid or saline solutions. By means of them a successionof the most powerful shocks… … Fig. 294.
Atmospheric electricity · Electricity -- Early works to 1850 · Magnetism
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