Haecker, Valentin [1864-1927] - Entwicklungsgeschichtliche Eigenschaftsanalyse (Phänogenetik) : gemeinsame Aufgaben der Entwicklungsgeschichte, Vererbungs..,.

Jena, Gustav Fischer, 1918. boards. 25x17cm, x,344 pp, Inscribed by author on title-page. Contemporary binder's boards with portion of original cover wrapper mounted on.. Rubbed. Rubberstamp to flyleaf & reverse of title. Good. ¶ Weighs 1 kilo. Full title reads: "Entwicklungsgeschichtliche Eigenschaftsanalyse (Phänogenetik) : gemeinsame Aufgaben der Entwicklungsgeschichte, Vererbungs- und Rassenlehre". ["..Haecker (1864-1927), a student of August Weismann, coined the term 'phenogenetics' in 191 2 . He understood it to mean an area of research that studies 'in terms of morphogenetics & developmental physiology the creation of a finished organism's external characteristics' and seeks 'to trace their roots back into the earliest possible developmental stage by going back step by step to the intermediate processes that are effective during development, and to the temporary characteristics'. According to Haecker, the main elements of Mendelian genetics, the 'visible, mature, external characteristics of the finished organism' and 'the invisible hypothetical heredity traits embedded in the germ cells' which so far had been only logically connected 'were to be 'related to each other through a chain of actual observations'"- from: Ute Deichmann, "Biologists Under Hitler" , page 164].

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