482 



C. M. Child. 



Figs. 24 and 25 show the two extremes of Series 80 thirty- 

 four days after section and Figs. 26 and 27 those of Series 81 

 after the same interval. Comparing the two pieces showing least 

 regeneration in the two series (Figs. 24 and 26) the amount of 

 regeneration in the piece from Series 80 (Fig. 24) is the greater 

 (Fig. 26), and a similar difference, though less marked, occurs in 

 the pieces showing the maximum regeneration (Figs. 25 and 27). 



m 



22 



w 



23 



Moreover, three pieces of Series 80 were essentially like Fig. 25, 

 while only one in Series 81 was like Fig. 27. As regards the 

 intestinal branches all pieces of Series 80 are in advance of Series 

 81. No further changes occurred in later stages. 



Thus in these series as in the others above described the pieces 

 containing the cephalic ganglia are quantitatively in advance of 

 those without ganglia. 



