Ratapoil and Casmajou having the ingenious idea of going to look for the famous Prussian Royomir whose gaze is so ardent to force him to contemplate for a few hours an egg which is having a lot of trouble hatching., Charles Vernier, 4 September 1851

Lithograph by charles vernier, plate no. 198 from the “news” series, le charivari, september 4, 1851. Date: 4 September 1851. Dimensions: height: 20.3 cm (7.9 in); width: 27.8 cm (10.9 in). Medium: engraving. Collection: Bibliothèque nationale de France. Ratapoil et Casmajou ayant l'ingénieuse idée d'aller chercher le célèbre Prussien Royomir