94 Charles W . Hargitt. 



cesses probably occurring throughout every regenerating organ in 

 this medusa. 



It was pointed out in connection with the description of certain 

 experiments that both in form and in function we have among 

 the Scyphomedusae a regenerative capacity extending to the most 

 highly specialized organs. In the subsequent account of the his- 

 tology of the regenerated organs it has been shown that the pro- 

 cess is a perfectly normal and characteristic one, conforming in 

 apparently every detail to the course of development of the em- 

 bryonic history of the several organs. 



LITERATURE CITED. 



EiMERj Th. — tJber Kiinstliche Theilbarkeit von Aurelia aurita und Cyanea 

 capillata in Physiologische Individuen. Wurzburg, 1874. 

 " Die Medusen Physiologisch u. Morphologisch auf ihr Nervensystem. 

 " Tubingen, 1878. 



" Organic Evolution. English Translation. Cunningham, 1890. 

 Forbes, Edw. — British Naked Eyed Medusae. London, 1848. 

 Hargitt, C. W. — Recent Studies in Regeneration. Biol. Bui. Vol. I, 1897. 



" Experimental Studies upon Hydromedusae. Biol. Bui., 1899. 

 Hargitt, G. T. — Notes on Regeneration in Gonionemus. Biol. Bui., 1902. 

 Hesse, R. — Uber das Nervensystem u. d. Sinnesorgane v. Rhizostoma Cuvier. 



Zeits. f. wiss. Zool., 1895. 

 Morgan, T. H. — Regeneration. Macmillan, 1901. 

 Romanes, G. J. — Jelly-fish, Star-fish and Sea Urchins. 1885. 



Uexkull, J. VON. — Die Schwimmbewegung von Rhizostoma pulmo. Mitt. Zool. 

 Sta. Neapel., XIV, 1900. 



Syracuse University, 



The Zoologicai Laboratory, 



January 20, 1904. 



