Channing, William F.(William Francis),1820-1901 · Boston : Thomas Hall · leaf 263
Pig. 9. No. 9. Compound Electrotome with Clockwork. Thisis a very powerful instrument, and is used principally toillustrate the induction current in colleges and medicalschools. Price, $20.00. No. 10. Horizontal Compound Electrotome. This isthe same as Fig. 9, with the exception of being… … Pig. 10. ping into mercury cups. When the hattery is connected,there is a bright spark in the glass cup, sufficient to lightup a small room. Price, $20.00. No. 11. This instrument is enclosed in a black walnutbox, with handles, battery, and wires. The battery is com-posed of zinc and platinum, and…
Electrotherapy · Medicine, Physical · Electricity
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