Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 98
ver anelectroscope by smart taps of a hammer, the fragments whichfall on the cap will generally make the leaves diverge. Forthe same reason, lump sugar, when broken in the dark, oftenshows a phosphorescence, due to the reuniting of the electri-cities separated by the fracture. 59.…
Electricity
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