[504] Unsere Körperform, p. 19, Leipzig, 1874.
[505] Biolog. Centrlbl., xiv., 1894, xv., 1895. Formative Reize in der thierischen Ontogenese, Leipzig, 1901.
[506] "La Morphologie dynamique," No. i. of the Collection de Morphologie dynamique, Paris, 1911.
[507] "Forme, Puissance et Stabilité des Poissons," No. iv. of the Collection, Paris, 1912.
CHAPTER XIX
SAMUEL BUTLER AND THE MEMORY THEORIES OF HEREDITY
We have laid stress upon the distinction established by Roux between the two stages of development—the automatic and the functional—because of the light which it seems to throw upon the phylogenetic relation of form to function. We have pointed out, too, the paramount rôle that function plays in Roux's theories of development and heredity, and we have brought out the close kinship existing between his theory and that of Lamarck. For Roux, as for Lamarck, the function creates the organ, and it is only after long generations that the organ appears before the function.
It so happened that just about the time when Roux's papers were beginning to appear a brilliant attempt was made by Samuel Butler to revive and complete the Lamarckian doctrine.