488 NOTES. 



rare cases it remains permanently, projecting freely : nsnally it 

 disappears at an early period, as in Anthropoid Apes. 



178 (ii. 284). On the Number of Yertebrss in different Mam- 

 mals, cf. Cuvier, "Lemons d* Anatomic Comparee." 2nd edition, 

 tome i., 1835, p. 177. 



179 (iL 293). On the earHer Sknll-theory of Goethe and Oken, 

 cf . Virchow, " Goethe as a Naturalist " (" Goethe als Natur- 

 forscher," 1861, p. 103). 



180 (ii 295.). Karl Gegenbaur, "The Head-skeleton of 

 Selachii" ("Das Kopfskelet der Selachier"). As the foundation 

 of a study of the head-skeleton of Vertebrates (1872). 



181 (ii. 301). Karl Gegenbaur, " On the Archipterygium." 

 — " Jenaische Zeitschrift fiir Naturwissenschaft," vol. viL 1873, 

 p. 131. 



182 (ii. 304). Gegenbaur, " Researches into the Comparative 

 Anatomy of Vertebrates" (" Untersuchungen zur Vergleichen- 

 den Anatomic der Wirbelthiere "). Part I. Carpus and Tarsus 

 (1864). Part II. The shoulder girdle of Vertebrates. Pectoral 

 fins of Fishes (1866). 



183 (ii. 305). Charles Martins, "Nouvelle comparaison des 

 membres pelviens et thoraciques chez I'hommc et chez les 

 mammiferes." — "Memoircs dc TAcad. de Montpellier," vol. iii 

 1857. 



184 (ii. 308). Ossification. Not all bones of the human bod} 

 arc first formed of cartilage. Cf. Gegenbaur, " On Primary and 

 Secondary Bone-formation, with special reference to the Pri- 

 mordial Skull Theory." — " Jenaisch. Zeitschrift fiir Natur- 

 wissenschaft," 1867, vol. iii. p. 54. 



185 (ii 308). Johannes Miiller, "Comparative Anatomy of 

 Myxinoides." — " Transactions of the Berlin Academy," 1834-1842. 



186 (ii. 314). The Homology of the Primitive Intestine and 

 the two primary germ-layers is the postulate for morphological 

 comparison of the various Metazoa-tribes. 



187 (ii. 322). In the Evolution of the Intestine, Amphibia and 

 Gunoids have, by heredity, retained the original Craniota-form 

 more accurately than have Selachii and Osseous Fishes (Teleotlei). 



