Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 198
Fiq. 112. Fiq 113 -Cu/ … Fig. Hi. i8o Electricity. [Book III. sulphate is carefully poured a solution of zinc sulphate ordilute acid, which, being specifically lighter, rests upon itwithout mixing. In contact with this is suspended a zincplate. Menottis battery differs from this only in placing alayer of sawdust or sand…
Electricity
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