[145] Ueber Entwickelungsgeschichte der Thiere, i., p. xvii., 1828.

[146] Zoologie, Landshut, i., 1808.

[147] Anatomie u. Bildungsgeschichte des Gehirns im Fötus des Menschen, Nürnberg, 1816.

[148] Beyträge zur vergleichende Anatomie, Leipzig, i., 1808-9, ii., 1811-2.

[149] Cetacea were generally considered at this time to be mammals of low organisation.

[150] From the French trans., which appeared under the title Traité gén. d'Anat. comparée, i., p. 449, 1828.

[151] Cf. Geoffroy (supra, p. 70).

[152] Beyträge, ii., 2, 1812. Also in his System d. vergl. Anat., i., 1821.

[153] In J. F. Meckel's Beyträge, ii.

[154] Zur Morphologie, i., 2, p. 250, 1820; and ii., 2, pp. 122-4, 1824.