Scientific recreations in philosophy and mathematics. Including arithmetic, acoustics, electricity, magnetism, optics, pneumatics; together with amusing secrets in various branches of science: the whole calculated, to form an agreeable and improving exercise for the mind / [William Enfield].

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Scientific recreations in philosophy and mathematics. Including arithmetic, acoustics, electricity, magnetism, optics, pneumatics; together with amusing secrets in various branches of science: the whole calculated, to form an agreeable and improving exercise for the mind / [William Enfield]. Public Domain Mark. Source: Wellcome Collection.