[215] Embryologie des Salmones. A separate volume of L. Agassiz's Histoire naturelle des Poissons d'Eau douce de l'Europe centrale, Neuchâtel, 1842.

[216] Untersuchungen über die Entwickelungsgeschichte der Gebürtshelferkröte, Solothurn, 1842.

[217] Müller's Archiv for 1843, p. ccxlviii.

[218] Untersuchtingen über die Entwickelung der Wirbelthiere, Berlin, 1850-55.

[219] Delivered 17th June 1858. Reprinted in The Scientific Memoirs of T. H. Huxley, edited by M. Foster and E. Ray Lankester, vol. i., pp. 538-606 (1898).

[220] Cf. Reichert, supra, p. 149.

[221] The origin of the pituitary body from the roof of the mouth was first described by Rathke (1839).

[222] Human Osteogeny explained in two Lectures, London, 1736.

[223] De capitis ossei Esocis lucii structura singulari. Dissert. inaug. Regiomonti, 1822.

[224] "Ueber das äussere und innere Skelet," Meckel's Archiv, pp. 327-76, 1826.