Note 456 — Chapter XVII
Reading edition
The importance of convergence came to be realised after the vogue of phylogenetic speculation had passed—see Friedmann, Die Konvergenz der Organismen, Berlin, 1904, and A. Willey, Convergence in Evolution, London, 1911. Also L. Vialleton, Elements de morphologie des Vertébrés, Paris, 1912.