| The Public Paperfolding History Project
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| Récréations mathématiques et physiques by Jacques Ozanam, 1723 | |||||||
| The
fourth volume of the 1723 edition of Jacques Ozanam's
'Récréations mathématiques et physiques' (which was
first published in 1694 but revised and expanded from two
to four volumes after Ozanam's death in 1718) contains a
rather out-of-place final section, titled 'De Gibeciere',
explaining how to perform magical tricks. It is believed
that responsibility for the revised edition, and thus for
the section on magic, rests with Martin Grandin, who was
a professor of philosophy at the University of Navarre. More information about this work can be found in 'Folding in Recreational Mathematics during the 17th–18th Centuries: Between Geometry and Entertainment' by Michael Friedman and Lisa Rougetet which can be found online here. The information on this page is based on an edition dated 1725, but as far as I know the the paperfolding material in this edition is identical to that in the 1723 edition. A copy of this 1725 edition can be found here. The paperfolding material in this book was widely reproduced in other books in other languages. **********
********** Analysis Troublewit
********** The Cherries Puzzle
********** While it is not completely clear how the instructions / illustrations shown here are to be translated / interpreted, I believe it is most likely that they are intended to be for the How to make a Chain from a Playing Card effect.
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