Channing, William F.(William Francis),1820-1901 · Boston : Thomas Hall · leaf 268
, and apply the other to the part affected.To produce- a constant current, pull the lever at the endof the box. No. 16. Large size Magneto-Electric Machine, for hos-pitals and institutions. The advantages that this instrumentpossesses over the induction coils is, that there is no battery;it is… … Pig. 17. No. 17. Medium size Magneto-Electric Machine, iiibox, suitable for a physicians office. Price, $35.00. 12 halls catalogue
Electrotherapy · Medicine, Physical · Electricity
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