286 THE ORIGIN OF THE NERVOUS SYSTEM 



Ritter, W. E., and Johnson, Myrtle 



191 i. "The Growth and Differentiation of the Chain of 

 Cyclosalpa affinis Chamisso," Jour. Morphol., XXII. 

 Robbins, H. S., and Child, C. M. 



1920. "Carbon Dioxide Production in Relation to Regen- 

 eration in Planaria dorolocephala," Biol. Bull., 

 XXXVIII. 

 Romanes, G. J. 



1877. " Preliminary Observations on the Locomotor System 



of Medusae," Phil. Tr., CLXVI. 



1878. "Further Observations on the Locomotor System of 



Medusae," Phil. Tr., CLXVIL 

 1893. Jellyfish, Starfish and Sea-Urchins. Internat. Sci. 

 Ser., New York. 

 Samassa, P. 



1892. "Zur Histologic der Ctenophoren," Arch. mikr. Anal., 

 XL. 

 ScnAEPPi, T. 



1904. "Uber den Zusammenhang von Muskel und Nerv 

 bei den Siphonophoren," Mitt, naturwiss. Gcs. Win- 

 terthur, Jahrgang 1903-4. 

 Sherrington, C. S. 



1906. The Integrative Action of the Nervous System. New 

 York. 

 Shorey, Marian L. 



1909. "The Effect of the Destruction of Peripheral Areas 



on the Differentiation of the Neuroblasts," Jour. 

 Exp. Zool., VII. 

 Stahl, E. 



1885. "Uber den Einfluss der Beleuchtungsrichtung auf die 

 Teilung der Equisetumsporen," Bcrichte dcutsch. 

 hot. Ges., III. 

 Stevens, N. M. 



1902. "Regeneration in Antcnnularia ramosa" Arch. f. 

 Entwickclungsmcch., XV. 



1910. "Regeneration in Antcnnularia,"' Arch. f. Etltwickel 



ungsmech., XXX. 



