Max Hartmann

Max Hartmann, a biologist, is alluded to In Phylogenetic Systematics by Willi Hennig for his investigations into divisions of sciences, most notably into descriptive and explanatory. He was philosopher of science and author of Allgemaine Biology.

The publicly available abstract of an article in Nature Magazine (1946) presents him as a student of the sexuality and fertilization in Protozoa and Algae; that "he can look back upon a fine record of original research...His investigations of ‘relative sexuality’ [which] have led to very important biochemical studies of the substances produced and released by gametes and essential for fertilization in Algae, echinoderms, molluscs and fishes"; and that he was an outspoken critic of Nazism. Hartmann was director of the "Kaiser Wilhelm Institut für Biologie".

...
Wikipedia