author
Known today for a rare early-20th-century German work on human “improvement,” this writer appears in modern catalogs largely through a single surviving title. Very little biographical information is readily documented, which gives the work an unusual, archival aura.

by Paul Christian Franze
Project Gutenberg lists Paul Christian Franze as the author of Höherzüchtung des Menschen auf biologischer Grundlage, and current catalog records indicate that this is the main work by which he is now known.
The book was published in German and is described in public-domain and library-style records as a substantially expanded version of a lecture delivered at the 81st meeting of German natural scientists and physicians in Salzburg in 1909, with publication in 1910. Its subject belongs to the early-20th-century wave of writing about biology, heredity, and eugenics.
Beyond that publication context, I could not confirm dependable biographical details such as Franze’s birth and death dates, profession, or personal background from the sources I found. For that reason, it is best to treat him as a little-documented historical author whose surviving reputation rests chiefly on this one controversial scientific-social text.