[368] In Grundriss einer Allgemeinen Naturgeschichte der Radiolarien, Berlin, 1887, and Kunstformen der Natur, Suppl. Heft, Leipzig.
[369] Haeckel had an intense admiration for Goethe's morphological work. It is a curious coincidence that the work of Goethe, Oken and Haeckel was closely associated with the town of Jena.
[370] But he himself would not admit this! See Gen. Morph., ii., p. 11.
[371] Für Darwin, 1864. Eng. trans, by Dallas as Facts and Arguments for Darwin, London, 1869.
[372] The bion is the physiological, as the morphon is the morphological, individual.
[373] See Vogt, Embryologie des Salmones, p. 259, 1842, and supra, p. 230.
[374] An Essay on Classification, London, 1859.
[375] It was hinted at by Tiedemann. "It is clear that, proceeding from the earlier to the more recent strata, a gradation in fossil forms can be established from the simplest organised animals, the polyps, up to the most complex, the mammals, and that accordingly the animal kingdom as a whole has its developmental periods just like the single individual organism. The species and genera which have become extinct during the evolutionary process may be compared with the organs which disappear during the development of the individual animal" (p. 73, 1808).
[376] The History of Creation, vol. i., p. 310, 1876. Translation of the Natürliche Schöpfungsgeschichte, 1868.
[377] Cf. a parallel passage from Serres, supra, p. 82.