[484] M. Fürbringer, perhaps under the influence of Roux, emphasised the importance, from a morphological point of view, of studying post-embryonic (functional) development, Unters. z. Morph. u. Syst. der Vögel, ii., Amsterdam, p. 925, 1888.
[485] See, for the development of this idea, Oppel, in Roux-Oppel, 1910.
[486] Cf. the controversy between Herbert Spencer and Weismann on the subject of "coadaptation" in the Contemporary Review for 1893 and 1894. See also Weismann's paper in Darwin and Modern Science, Cambridge, 1909.
[487] That is, the length they take up when separated from the body.
[488] "Wilhelm Roux zum 60. Geburtstage," Arch. f. Entw.-Mech., xxx. Festschrift für Prof. Roux, Pt. i, 1910.
[489] Virchow's Archiv, cxiv., 1888. First announced in Sept. 1887.
[490] Ueber die Bedeutung der Kernteilungsfiguren, Leipzig, 1883.
[491] Bresl. ärtz. Zeitschr., 1885.
[492] Journ. de l'Anat. et de la Physiologie, xxiii., 1887.
[493] Zeits. f. wiss. Zool., liii., 1891 and 1892.