studies copper engraving with Johann Martin Friedrich Geißler at Nuremberg art school, in 1829 steel engr. w. prof. Carl Ludwig Frommel in Karlsruhe ;
Germany
Alexander von Humboldt: Umrisse von Vulkanen aus den Cordilleren von Quito & Mexico (Stuttgart & Tübingen 1853) ;
naturalist ->Alexander von Humboldt (prov. sketches) ; draughtsman ->J. Stock ; draughtsman ->E. Hildebrandt ; draughtsman ->Schinkel ; draughtsman -> L. Martin (Mexico) ; engraver ->J. Riegel (who had been trained by J. P.) ;
architectural, geological, geographical, and topographical copper- and steel-engraving ; mostly known for non-scientific landscape motifs ;
