S-block staging entry validated for model fit. Imported from staging batch duell-thimm-s, source entry 2051. First and second editions, Berlin: Schroeder, 1862; later editions consolidated here. Individually bibliographically reviewed in phase 94 against the complete source entry and, where needed, independent catalogue evidence. phase 94: former work 2915 individually reviewed and consolidated here. phase 94: former work 2916 individually reviewed and consolidated here. phase 94: former work 2918 individually reviewed and consolidated here.