Portrait showing Emil du Bois-Reymond, facing left. Lithographed by G. Englebach and printed by M. W. Lasfally, Berlin. Facsimile signature.
Publisher: Berlin: Verlag von August Hirschwald.
The nursing can, or mammele, was an early infant feeding device handmade from tin. It was used by German settlers in southeastern Pennsylvania and thought to be indigenous to that region.