[205] Handbuch d. menschl. Anatomie, iv., p. 47.

[206] This was shown by Serres (Ann. Sci. nat., xi., p. 54 f.n., 1827), who found in a human embryo a long cartilaginous piece extending from the ear-ossicles to the inside of the lower jaw, and suggested that it was the foundation of the permanent mandible.

[207] Abhandl., i., p. 102, 1832; ii., p. 25, 1833. (Blennius paper).

[208] Vergleichende Entwickelungsgeschichte des Kopfes der nackten Amphibien, Königsberg, quarto, 276 pp., 1838.

[209] Müller's Archiv for 1838.

[210] Entwickelungsgeschichte der Natter, Königsberg, 1839.

[211] Bemerkungen über die Entwickelung des Schädels der Wirbelthiere, Königsberg, 1839.

[212] Handbuch der Physiologie des Menschen, Koblenz, 1835; Eng. trans. by W. Baly, ii., p. 1615, 1838.

[213] For a full statement of Rathke's conclusions, see the translation given by Huxley in Lectures on the Elements of Comparative Anatomy, London, 1864.

[214] Entwickelungsgeschichte der Wirbelthiere, p.142, 1861.