DE SAUSSURE, Sur la génération des courbes par roulement, 1895

First edition.
René de Saussure (1868-1943) was a Swiss mathematician and linguist, specializing in geometry. He is one of the founders of the Esperanto movement. This work is his doctoral thesis, in which he explores the kinematics of curves, studying their generation from the rolling of one curve on another. It is a contribution to differential geometry and kinematics.