262 



C. M. Child. 



The apparent change in position of the pharynx is of some 

 interest. This is probably due on the one hand to reduction of 

 the old anterior portion and on the other to regeneration of a 



new posterior portion. That any extensive actual shitting in the 

 position of the pharynx has occurred seems doubtful, alfho^S^ 

 some degree of shifting of the internal organs within the body 

 wall is perhaps possible. 



