Channing, William F.(William Francis),1820-1901 · Boston : Thomas Hall · leaf 279
^^\. mil IlWi Fig. 48. No. 48. Halls Hard Rubber Sponge Cup. This isused by placing the hemisphere in the palm of the hand, HALLS CATALOGUE and letting the knob project through the fingers. Thesponge is fastened in the cup by a spring. By this arrange-ment the sponge can be taken out of the cup and…
Electrotherapy · Medicine, Physical · Electricity
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