Magic, pretended miracles, and remarkable natural phenomena (1855)
Philadelphia : American Sunday-school Union · leaf 144
e part it performs inthe undertaking is essential. While travelling, ELECTRIC TELEGRAPH, Ul Mr. Cooke found great inconvenience to resultsfrom the spilling of the acid solution use^l inSinees batteries ; and, from this, he was ledto consider if the substitution of fine whiteShanklin sand, saturated… … the same method was tried in the permanentbatteries, and, in like manner, the result hasproved satisfactory. At present, the generatorresembles, in its principal features, the one 142 ELECTRICITY. known as Wollastons trough; and it is soarranged, that the series of plates of cojJperandamalgamated…
Magic
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