Note 68 — PAPER 27
Reading edition
The renowned Jean Victor Poncelet lent weight to this scheme. (See Franz Reuleaux, Theoretische Kinematik: Grundzüge einer Theorie des Maschinenwesens, Braunschweig, 1875, translated by Alexander B. W. Kennedy as The Kinematics of Machinery: Outlines of a Theory of Machines, London, 1876, pp. 11, 487. I have used the Kennedy translation in the Reuleaux references throughout the present work.)