FABRY, Eugène. L'art de construire les ballons en papier. [1884].

Mathematician (he worked on differential equations), Fabry gives here a funny and interresting work on how to build small balloons in paper that can fly.
The book begins with guide on how build balloons. It then explains how to inflate and fly them.
The book continues with a theoretical part allowing the reader to develop himself further plans and ends with an indication of the accessories that can be carried away in a balloon, and in particular the way to build parachutes.
Rare work which is not in any French public library (source: ccfr).