Aux amateurs de Physique - The Great Nassau Balloon, Parachute - The manner of descending in a parachute - Two plates on the theme of the balloon in Africa - Chute d'un aérostat - Le Chapeau au ballon. Engravings or lithographs (by Bouquin and E. Cicéri), some in color, a little yellowed. Framed with 6 plates, one in sheet. Together 7 plates. 15,5 x 20,5cm. 31 x 11cm, 21 x 16cm.