Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 224
ese dioxide, being in contact with the carbon, givesup half of its oxygen to the hydrogen forming water,while it is reduced to manganese monoxide. T .is cell is useful for call bell work, operating mag- 6PEN CIRCUIT CELLS 225 nets on interlocking machines, running tell-tales on inter-locking boards…
Electricity
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