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Harvard

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Matches in Harvard for { ?s ?p Endless amusement. The largest collection ever heretofore published, of the most interesting and instructive experiments in various branches of science: including electrical, pneumatical & galvanical phenomena, optical illusions, chemical changes and creations, the wonders of the magnet, magical properties of figures, philosophical experiments in acoustics, hydraulics, hydrostatics, mechanics and mathematics. To which is added all the popular tricks & changes in cards.. }

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