Das Analogieproblem in seiner Bedeutung für die Naturerkenntnis

Neglect of the problem of analogy in the modern study of the natural sciences has been partly responsible for quite far-reaching misconceptions, as is seen particularly in the attempt to introduce conceptions of life and freedom into the inorganic sphere. A critical examination of these trends of thought shows that the apparently life-like behaviour of inorganic objects (atoms, molecules) and the apparent freedom of atomic happenings, are not ontic similarities (homologues) but analogies, that is similarities which are based on no true relationship in the nature of the phenomena. An exact differentiation is possible by the “Schichtenlehre”, which is also suitable for the treatment of those …

Über Leitbündelisolierung in achsenartigen Organen

Entwicklungsgeschichtliche Untersuchungen über das Zustandekommen unifazialer Blattstrukturen

Über die Gestaltung der Kotyledonen von Tilia und Lepidium sativum

Die Urbildlichkeit der organischen Gestaltung und Goethes Prinzip der «Variablen Proportionen»

Le probleme centrale de la morphologie organique est la question de l'unite de type (= unite de plan). C'estGoethe qui la fonda comme la doctrine de type. En meme temps,Goethe a formule le principle le plus general qui domine les relations entre le type et les formes singulieres qui lui appartiennent: le principe des proportions variables. L'explication moderne est la suivante: la variete d'organismes de la meme construction ne se base que sur la seule difference de la proportion de grandeur, dans laquelle se trouvent les membres entre eux.