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Rational recreations, 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 (1787)

Hooper, William, M.D. nr 92038152 · London : Printed for L. Davis [etc.] · leaf 332

An illustration from Rational recreations, 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, 1787, leaf 332
286 RATIONAL RECREATION CVI. 'The geometric money. Draw on pafleboard the following redangle ABCD, whofe fide AC is three inches, and AB ten inches. … Divide the longeft fide into ten equal parts, and the fhortefl into three equal parts, and draw the perpendicular lines, as in the figure, which will divide it into thirty equal fquares. From A to D draw the diagonal’A D, and cut the figure, by that line, into two equal triangles, and cut thofe…

Scientific recreations

Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.

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