Channing, William F.(William Francis),1820-1901 · Boston : Thomas Hall · leaf 271
Fig. 23. The advantage of this battery as a medical agent is very-great, as it will remain in constant action from nine monthsto a year without replacing, except with water, to replacethat which has evaporated. Price, per cup, $1.25. … Pig. 24. No. 24. Manipulator. This is a very ingenious instru-ment, contrived by Dr. William F. Channing, for bringingany number of batteries into circuit at pleasure from oneto one hundred cups. It is arranged with a pole-changer,break-piece, key, and clock-work electrotome. This is a very OF…
Electrotherapy · Medicine, Physical · Electricity
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