No. IS—Yol. II—March, 1839. PONT DU CARROUSEL, PARIS. ENGINEER, M. POI.ENCEAU. I'ig. 1. Elevation of one of the Side Arches md Abutment Fig. 3. Plan of Ribs below Roadway Fig. 2. Section of Arch and Elevation of Abutment. 1839.] THE CIVIL ENGINEER AND ARCHITECT’S JOURNAL.