. Biologisches Zentralblatt. Biology. 246 Semon, Über die Erblichkeit der Tagesperiode. Kurve 1905 18^ 24^ (i^ n^ XS^ 24^ 6^ 12^ 18^ 24^ 6^ 12^ 18^ 24^ 6^ I2I* 18^ 24'*6^ 12^' 18^ 7^1. S^IXIlT' O-IXIlT" '" ll.(XII. 12.|XII. Kurve Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Rosenthal, I. (Isidor), 1836-1915. Leipzig [etc. ] VEB Georg Thieme [etc. ]

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