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 (1794)
Hooper, W. (William), fl. 1770 · London : Printed for B. Law and son, and G. G. and J. Robinson · leaf 80
ufl en-ter that marked H; and at its outwardextremity place a lens of about fifteeninches focus. There mufi: alfo be a third tube R,four inches long, which is to enter thatmarked I: to the exterior end of this ad-jufl: a concave mirror, whofe focus muftbe at feven or eight inches from its… … f. I.ixiic JaJfi.
Scientific recreations · Card games
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