Origami Heaven

A paperfolding paradise

The website of writer and paperfolding designer David Mitchell

x

 
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 by Jombert in Paris but revised and expanded from two to four volumes after his 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 the invaluable 'Folding in Recreational Mathematics during the 17th–18th Centuries: Between Geometry and Entertainment' by Michael Friedman and Lisa Rougetet which can be found online at https://pdfs.semanticscholar.org/d196/f37ba906d25743822cabc51175ffecfb5dcd.pdf

A full copy of the fourth volume can be found online at https://books.google.fr/books?id=6JP6Hz5EHYQC&pg=435#v=onepage&q&f=false

**********

Troublewit

**********

The Cherries Puzzle

**********