392 INTRODUCTION. 



the epiblast are (i) the skin; (2) the nervous system; (3) the 

 organs of special sense. 



Those from the mesoblast are (i) the general connective 

 tissue and skeleton ; (2) the vascular system and body cavity ; 

 (3) the muscular system ; (4) the urinogenital system. 



Those from the hypoblast are the alimentary tract and its 

 derivates ; with which the stomodaeum and proctodaeum and 

 their respective derivates are also dealt with. 



BIBLIOGRAPHY. 



General works dealing with the development of the organs of the 



Chordata. 



(291) K. E. von Baer. Ueber Entwicklungsgeschichte d. Thiere. Konigsberg, 

 18281837. 



(292) F. M. Balfour. A Monograph on tlic development of Elasmobrancli Fishes. 

 London, 1878. 



(293) Th. C. W. Bischoff. Entwicklungsgesch. d. Sdtigethiere ti. d. Menschen. 

 Leipzig, 1842. 



(294) C. Gegenbaur. Gnindriss d. vergleichenden Anatomic. Leipzig, 1878. 

 Vide also English translation, Elements of Comp. Anatomy. London, 1878. 



(295) M. Foster and F. M. Balfour. The Elements of Embryology. Part I. 

 London, 1874. 



(296) Alex. Gotte. Entwicklungsgeschichte d. Unke. Leipzig, 1875. 



(297) W. His. Untersitch. iib. d. erste Anlage d. Wirbelthierleibcs . Leipzig, 

 1868. 



(298) A. Ko Hiker. Entwicklungsgeschichte d. Menschen u. der hoheren Thiere. 

 Leipzig, 1879. 



(299) H. Rathke. Abhandlungen it. Bildung mid Entwicklungsgeschichle d. 

 Menschen it. d. Thiere. Leipzig, 1838. 



(300) H. Rathke. Entwicklungs. d. Natter. Kbnigsberg, 1839. 



(301) H. Rathke. Entwicklungs. d. Wirbelthiere. Leipzig, 1861. 



(302) R. Remak. Untersuchnngen iib. d. Entwicklung d. Wirbelthiere. Berlin, 

 18501855. 



(303) S. L. Schenk. Lehrbuch d. vei'gleich. Embryologie d. Wirbeltliicre. 

 Wien, 1874. 



