FIGURE 1 in Gustav Heinrich Kirchenpauer (1808-1887) of the City of Hamburg, and his research on hydroids and bryozoans

FIGURE 1. Gustav Heinrich Kirchenpauer, Bürgermeister of the Freie und Hansestad Hamburg, and taxonomist of hydroids and bryozoans. A, from Cuxhaven City Archives, photograph number 34C1-00170. B, from Wohlwill, 1903, in http://commons.wikimedia.org/wiki/File:Gustav_Heinrich_Kirchenpauer.jpg, last accessed 27 September 2010.