Trebel, George. [from old catalog] · New York, F. Tousey · leaf 37
end of theother; they reper one another. Bring the unmarked ends nearone another; they repel one another. From this we discoverthe following law of magnets: Like poles repel, unlike polesattract one another. Substances that are not susceptible to magnetism are, likeglass, paper and wood,… … As attraction, and never repulsion, occurs between a mag-net and an unmagnetized piece of iron or steel, it must bethat the magnetism induced in the latter is such that oppositepoles are adjacent. Strew iron filings on a flat surface, and laya box magnet on them. On raising the magnet it is found…
Electricity
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