Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 205
city. [Boot III. is no means of removing the zinc plates for amalgamation,great local action being the consequence, necessitating the useof very weak acid. Batteries of five or six cells, either of Smees or thebichromate type (sufficient for most experimental purposes),are now constructed with the… … Fig. 121. For post-office and other work, it is found more convenientto use series of DanielPs cells, which, when the plates are wellamalgamated at first, remain in action without further atten-tion for several weeks. The same is true of series of Leclanch6cells, provided continuous currents are…
Electricity
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