Rational Recreations, Vol. 4 In Which the Principles of Numbers and Natural Philosophy Are Clearly and Copiously Elucidated, by a Series of Easy, Entertaining, Interesting Experiments; Among Which Are All Those Commonly Performed with the Cards

Excerpt from Rational Recreations, Vol. 4: In Which the Principles of Numbers and Natural Philosophy Are Clearly and Copiously Elucidated, by a Series of Easy, Entertaining, Interesting Experiments; Among Which Are All Those Commonly Performed With the Cards

Fig. I. The air gun. Ecdr the outer bar rel; KA the inner barrel; smnp the fyringe, ' by which the air is injefieci through the valve NP Tb another valve, that is opened by the'

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