Bernard Bolzano, Gregor Zeithammer

English summary: The Bolzano biography written by Gregor Zeithammer (1800-1881) has up to now only been cited in excerpts. The text-critical, annotated edition of the manuscript from Zeithammers literary estate, which is preserved at the literary archives in Prague, makes this important source for research on Bolzano completely accessible. German description: Die Bolzano-Biographie von Gregor Zeithammer (1800-1881) wurde bisher nur in Auszugen zitiert. Die textkritische, kommentierte Edition des Manuskripts aus dem Zeithammer-Nachlass des Literaturarchivs in Prag macht diese wichtige Quelle der Bolzano-Forschung nun vollstandig zuganglich.