Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 195
silver or platinum, in either case covered over withfinely divided platinum. This rough-ened surface discharges the hydrogenin a very remarkable degree, so thatthis form of cell is far more constantthan any other one fluid arrangement.In this cell there are generally twoamalgamated zinc plates on… … Fig. 110. III. The Bichromate Cell.—The only other one-fluidcell now commonly used is the bichromate cell, which isuseful for ringing a bell, or other purposes where the currentis intermittent. In this, as in other cells described later, the platinode is ofgas coke, a substance obtained from the…
Electricity
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