The French mathematician and engineer G rard Desargues (1591-1661) was one of the founders of projective geometry. Desargues' theorem is named in the honour of this prolific writer of treatises on geometry and its application to the arts and architecture. His important writings, which had been lost, were published in 1864 by the mathematician and scientific historian No l-Germinal Poudra (1794-1894). Poudra's two-volume edition of his treatises, republished...