Channing, William F.(William Francis),1820-1901 · Boston : Thomas Hall · leaf 38
mi^H 111 … armatures over their extremities, or by turning thehandle slowly, the current is proportionally dimin-ished. 32. The quantity of the electricity from thisapparatus is rather greater than that from the electro-magnetic apparatus. It is also always ready for use,and requires no battery or solutions.…
Electrotherapy · Medicine, Physical · Electricity
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