Channing, William F.(William Francis),1820-1901 · Boston : Thomas Hall · leaf 269
Pig. 18. No. 18. Magneto-Electric Machine, without box, neat-ly mounted on rosewood base. Price, $25.00. No. 19. Magneto-Electric Machine, with Single Magnet.This is intended for institutions. Price, $80.00. No. 20. Largest Size, run with Clockwork, with fourcoils, producing quantity and intensity… … Pig. 21. No. 21. A Series of Twelve Groves Battery, in bos.We consider this battery the best for the electro-chemicalbaths. It consists of amalgamated zinc and platinum, OF ELECTRO-MEDICAL INSTRUMENTS. 13 excited with sulphuric and nitric acid. It is a very intensebattery. From twelve to fifteen…
Electrotherapy · Medicine, Physical · Electricity
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